diff --git a/apps/dsp-app/src/app/workspace/resource/operations/display-edit/display-edit.component.ts b/apps/dsp-app/src/app/workspace/resource/operations/display-edit/display-edit.component.ts
index 8bbbd28670..cce2494798 100644
--- a/apps/dsp-app/src/app/workspace/resource/operations/display-edit/display-edit.component.ts
+++ b/apps/dsp-app/src/app/workspace/resource/operations/display-edit/display-edit.component.ts
@@ -26,7 +26,6 @@ import {
 } from '../../../../main/action/confirmation-dialog/confirmation-dialog.component';
 import { BaseValueDirective } from '../../../../main/directive/base-value.directive';
 import { PropertyInfoValues } from '../../properties/properties.component';
-import { UserService } from '../../services/user.service';
 import {
   DeletedEventValue,
   EmitEvent,
@@ -68,60 +67,38 @@ export class DisplayEditComponent implements OnInit {
   @ViewChild('displayVal') displayValueComponent: BaseValueDirective;
 
   @Input() displayValue: ReadValue;
-
   @Input() propArray: PropertyInfoValues[];
-
   @Input() parentResource: ReadResource;
-
   @Input() configuration?: object;
-
   @Input() canDelete: boolean;
-
   @Input() cantDeleteReason: string;
-
   @Input() projectStatus: boolean;
-
   @Input() valueUuidToHighlight: string;
+  @Input() user: ReadUser;
 
   @Output() referredResourceClicked: EventEmitter<ReadLinkValue> = new EventEmitter<ReadLinkValue>();
-
   @Output() referredResourceHovered: EventEmitter<ReadLinkValue> = new EventEmitter<ReadLinkValue>();
 
   constants = Constants;
 
   mode: 'read' | 'update' | 'create' | 'search';
-
   canModify: boolean;
-
   editModeActive = false;
-
   submittingValue = false;
-
   shouldShowCommentToggle: boolean;
-
   // type of given displayValue
   // or knora-api-js-lib class representing the value
   valueTypeOrClass: string;
-
   // indicates if value can be edited
   readOnlyValue: boolean;
-
   // indicates if the action bubble with the CRUD buttons should be shown
   showActionBubble = false;
-
   // string used as class name to add add to value-component element on hover
   valueHovered: boolean;
-
   dateDisplayOptions: 'era' | 'calendar' | 'all';
-
   showDateLabels = false;
-
   textArea = false;
-
   dateFormat: string;
-
-  user: ReadUser;
-
   ontoIri: string;
 
   constructor(
@@ -129,7 +106,6 @@ export class DisplayEditComponent implements OnInit {
     private _dspApiConnection: KnoraApiConnection,
     private _valueOperationEventService: ValueOperationEventService,
     private _dialog: MatDialog,
-    private _userService: UserService,
     private _valueService: ValueService,
     private _cd: ChangeDetectorRef
   ) {}
@@ -168,13 +144,6 @@ export class DisplayEditComponent implements OnInit {
     }
 
     this.readOnlyValue = this._valueService.isReadOnly(this.valueTypeOrClass, this.displayValue, resPropDef[0]);
-
-    // prevent getting info about system user (standoff link values are managed by the system)
-    if (this.displayValue.attachedToUser !== 'http://www.knora.org/ontology/knora-admin#SystemUser') {
-      this._userService.getUser(this.displayValue.attachedToUser).subscribe(user => {
-        this.user = user.user;
-      });
-    }
   }
 
   getTooltipText(): string {
diff --git a/apps/dsp-app/src/app/workspace/resource/properties/properties.component.html b/apps/dsp-app/src/app/workspace/resource/properties/properties.component.html
index 6cdbbc091b..8f782de685 100644
--- a/apps/dsp-app/src/app/workspace/resource/properties/properties.component.html
+++ b/apps/dsp-app/src/app/workspace/resource/properties/properties.component.html
@@ -1,5 +1,5 @@
 <!-- toolbar -->
-<div class="toolbar" *ngIf="project" [class.deleted]="deletedResource || resource.res.isDeleted">
+<div class="toolbar" *ngIf="project$ | async" [class.deleted]="deletedResource || resource.res.isDeleted">
   <!-- resource info -->
   <h3 class="label mat-headline-6">{{resource.res.label}} <span *ngIf="deletedResource">(deleted)</span></h3>
 
@@ -78,7 +78,7 @@ <h3 class="label mat-headline-6">{{resource.res.label}} <span *ngIf="deletedReso
     <!-- more menu with: delete, erase resource -->
     <button
       color="primary"
-      *ngIf="userCanEdit && project?.status"
+      *ngIf="userCanEdit && (project$ | async)?.status"
       mat-icon-button
       class="more-menu"
       matTooltip="More"
@@ -120,7 +120,7 @@ <h3 class="label mat-headline-6">{{resource.res.label}} <span *ngIf="deletedReso
 </div>
 
 <!-- additional line with project and user information -->
-<div class="infobar mat-caption" *ngIf="project && user">
+<div class="infobar mat-caption" *ngIf="(project$ | async) as project">
   <span *ngIf="displayProjectInfo"
     >This resource {{ resource.res.isDeleted ? 'belonged' : 'belongs' }} to the project
     <span class="project link" (click)="openProject(project)" (mouseover)="previewProject()">
@@ -140,7 +140,7 @@ <h3 class="label mat-headline-6">{{resource.res.label}} <span *ngIf="deletedReso
 <div class="properties-container">
   <div class="properties" *ngIf="resource.resProps.length > 0; else noProperties">
     <!-- list of properties -->
-    <div *ngFor="let prop of resource.resProps; let last = last">
+    <div *ngFor="let prop of resource.resProps; let last = last; trackBy: trackByPropertyInfoFn">
       <!-- show property; all in case of showAll === true or only the ones with prop.values -->
       <div
         *ngIf="(showAllProps || ( prop.values && prop.values.length > 0 ) || (prop.propDef.id === hasIncomingLinkIri && numberOffAllIncomingLinkRes > 0)) && (
@@ -170,7 +170,7 @@ <h3 class="label mat-headline-6">{{resource.res.label}} <span *ngIf="deletedReso
         </div>
         <div class="property-value">
           <!-- the value(s) of the property -->
-          <div *ngFor="let val of prop.values">
+          <div *ngFor="let val of prop.values; trackBy: trackByValuesFn">
             <app-display-edit
               *ngIf="val"
               #displayEdit
@@ -179,14 +179,15 @@ <h3 class="label mat-headline-6">{{resource.res.label}} <span *ngIf="deletedReso
               [propArray]="resource.resProps"
               [canDelete]="deleteValueIsAllowed(prop)"
               [cantDeleteReason]="cantDeleteReason"
-              [projectStatus]="project?.status"
+              [projectStatus]="(project$ | async)?.status"
+              [user]="user"
               [valueUuidToHighlight]="valueUuidToHighlight"
               (referredResourceClicked)="openResource($event)"
               (referredResourceHovered)="previewResource()">
             </app-display-edit>
           </div>
           <!-- Add value form -->
-          <div *ngIf="addValueFormIsVisible && propID === prop.propDef.id && project?.status">
+          <div *ngIf="addValueFormIsVisible && propID === prop.propDef.id && (project$ | async)?.status">
             <app-add-value
               #addValue
               class="add-value"
@@ -196,7 +197,7 @@ <h3 class="label mat-headline-6">{{resource.res.label}} <span *ngIf="deletedReso
             </app-add-value>
           </div>
           <!-- Add button -->
-          <div *ngIf="addValueIsAllowed(prop) && project?.status">
+          <div *ngIf="addValueIsAllowed(prop) && (project$ | async)?.status">
             <button
               mat-icon-button
               type="button"
@@ -213,7 +214,7 @@ <h3 class="label mat-headline-6">{{resource.res.label}} <span *ngIf="deletedReso
               <!-- the value(s) of the incoming links -->
               <a
                 class="link link-value"
-                *ngFor="let inRes of displayedIncomingLinkResources"
+                *ngFor="let inRes of displayedIncomingLinkResources; trackBy: trackByFn"
                 (click)="openResource(inRes.id)"
                 >{{inRes.resourceClassLabel}}: <strong>{{inRes.label}}</strong></a
               >
diff --git a/apps/dsp-app/src/app/workspace/resource/properties/properties.component.ts b/apps/dsp-app/src/app/workspace/resource/properties/properties.component.ts
index 1553541e0a..d28bed6650 100644
--- a/apps/dsp-app/src/app/workspace/resource/properties/properties.component.ts
+++ b/apps/dsp-app/src/app/workspace/resource/properties/properties.component.ts
@@ -34,9 +34,7 @@ import {
   ResourcePropertyDefinition,
   UpdateResourceMetadata,
   UpdateResourceMetadataResponse,
-  UserResponse,
 } from '@dasch-swiss/dsp-js';
-import { ProjectApiService } from '@dasch-swiss/vre/shared/app-api';
 import { DspApiConnectionToken } from '@dasch-swiss/vre/shared/app-config';
 import {
   Events as CommsEvents,
@@ -47,15 +45,20 @@ import {
   SortingService,
 } from '@dasch-swiss/vre/shared/app-helper-services';
 import { NotificationService } from '@dasch-swiss/vre/shared/app-notification';
-import { LoadClassItemsCountAction } from '@dasch-swiss/vre/shared/app-state';
-import { Store } from '@ngxs/store';
-import { Observable, Subscription, forkJoin } from 'rxjs';
+import {
+  GetAttachedProjectAction,
+  GetAttachedUserAction,
+  LoadClassItemsCountAction,
+  ResourceSelectors,
+} from '@dasch-swiss/vre/shared/app-state';
+import { Actions, Store, ofActionSuccessful } from '@ngxs/store';
+import { Observable, Subject, Subscription, forkJoin } from 'rxjs';
+import { map, take, takeUntil, takeWhile } from 'rxjs/operators';
 import { ConfirmationWithComment, DialogComponent } from '../../../main/dialog/dialog.component';
 import { DspResource } from '../dsp-resource';
 import { RepresentationConstants } from '../representation/file-representation';
 import { IncomingService } from '../services/incoming.service';
 import { ResourceService } from '../services/resource.service';
-import { UserService } from '../services/user.service';
 import {
   AddedEventValue,
   DeletedEventValue,
@@ -79,6 +82,8 @@ export interface PropertyInfoValues {
   styleUrls: ['./properties.component.scss'],
 })
 export class PropertiesComponent implements OnInit, OnChanges, OnDestroy {
+  private ngUnsubscribe: Subject<void> = new Subject<void>();
+
   /**
    * input `resource` of properties component:
    * complete information about the current resource
@@ -154,9 +159,15 @@ export class PropertiesComponent implements OnInit, OnChanges, OnDestroy {
   displayedIncomingLinkResources: ReadResource[] = [];
   hasIncomingLinkIri = Constants.HasIncomingLinkValue;
 
-  project: ReadProject;
-  user: ReadUser;
+  project$ = this._store.select(ResourceSelectors.attachedProjects).pipe(
+    takeWhile(attachedProjects => this.resource !== undefined && attachedProjects[this.resource.res.id] !== undefined),
+    takeUntil(this.ngUnsubscribe),
+    map(attachedProjects =>
+      attachedProjects[this.resource.res.id].value.find(u => u.id === this.resource.res.attachedToProject)
+    )
+  );
 
+  user: ReadUser;
   pageEvent: PageEvent;
   loading = false;
 
@@ -165,19 +176,18 @@ export class PropertiesComponent implements OnInit, OnChanges, OnDestroy {
   constructor(
     @Inject(DspApiConnectionToken)
     private _dspApiConnection: KnoraApiConnection,
-    private _projectApiService: ProjectApiService,
     private _dialog: MatDialog,
     private _incomingService: IncomingService,
     private _notification: NotificationService,
     private _resourceService: ResourceService,
-    private _userService: UserService,
     private _valueOperationEventService: ValueOperationEventService,
     private _valueService: ValueService,
     private _componentCommsService: ComponentCommunicationEventService,
     private _sortingService: SortingService,
     private _cd: ChangeDetectorRef,
     private _store: Store,
-    private _ontologyService: OntologyService
+    private _ontologyService: OntologyService,
+    private _actions$: Actions
   ) {}
 
   ngOnInit(): void {
@@ -241,18 +251,21 @@ export class PropertiesComponent implements OnInit, OnChanges, OnDestroy {
     } else {
       localStorage.setItem('showAllProps', JSON.stringify(this.showAllProps));
     }
+
+    this._store.dispatch([
+      new GetAttachedUserAction(this.resource.res.id, this.resource.res.attachedToUser),
+      new GetAttachedProjectAction(this.resource.res.id, this.resource.res.attachedToProject),
+    ]);
+    this._actions$
+      .pipe(ofActionSuccessful(GetAttachedUserAction))
+      .pipe(take(1))
+      .subscribe(() => {
+        const attachedUsers = this._store.selectSnapshot(ResourceSelectors.attachedUsers);
+        this.user = attachedUsers[this.resource.res.id].value.find(u => u.id === this.resource.res.attachedToUser);
+      });
   }
 
   ngOnChanges(): void {
-    this._projectApiService.get(this.resource.res.attachedToProject).subscribe(response => {
-      this.project = response.project;
-    });
-
-    // get user information
-    this._userService.getUser(this.resource.res.attachedToUser).subscribe((response: UserResponse) => {
-      this.user = response.user;
-    });
-
     this._getAllIncomingLinkRes();
   }
 
@@ -263,6 +276,10 @@ export class PropertiesComponent implements OnInit, OnChanges, OnDestroy {
     }
   }
 
+  trackByFn = (index: number, item: ReadResource) => `${index}-${item.id}`;
+  trackByValuesFn = (index: number, item: any) => `${index}-${item}`;
+  trackByPropertyInfoFn = (index: number, item: PropertyInfoValues) => `${index}-${item.propDef.id}`;
+
   /**
    * opens project
    * @param project
@@ -547,7 +564,9 @@ export class PropertiesComponent implements OnInit, OnChanges, OnDestroy {
     // display notification and mark resource as 'erased'
     this._notification.openSnackBar(`${response.result}: ${this.resource.res.label}`);
     this.deletedResource = true;
-    const ontologyIri = this._ontologyService.getOntologyIriFromRoute(this.project?.shortcode);
+    const attachedProject = this._store.selectSnapshot(ResourceSelectors.attachedProjects);
+    const project = attachedProject[this.resource.res.id].value.find(u => u.id === this.resource.res.attachedToProject);
+    const ontologyIri = this._ontologyService.getOntologyIriFromRoute(project?.shortcode);
     const classId = this.resource.res.entityInfo.classes[this.resource.res.type]?.id;
     this._store.dispatch(new LoadClassItemsCountAction(ontologyIri, classId));
     this._componentCommsService.emit(new EmitEvent(CommsEvents.resourceDeleted));
diff --git a/libs/vre/shared/app-state/src/index.ts b/libs/vre/shared/app-state/src/index.ts
index fe75154e3b..fcfaf23ab2 100644
--- a/libs/vre/shared/app-state/src/index.ts
+++ b/libs/vre/shared/app-state/src/index.ts
@@ -3,24 +3,28 @@ export * from './lib/lists/lists.selectors';
 export * from './lib/ontologies/ontologies.selectors';
 export * from './lib/ontology-class/ontology-class.selectors';
 export * from './lib/projects/projects.selectors';
+export * from './lib/resource/resource.selectors';
 export * from './lib/user/user.selectors';
 
 export * from './lib/lists/lists.actions';
 export * from './lib/ontologies/ontologies.actions';
 export * from './lib/ontology-class/ontology-class.actions';
 export * from './lib/projects/projects.actions';
+export * from './lib/resource/resource.actions';
 export * from './lib/user/user.actions';
 
 export * from './lib/lists/lists.state-model';
 export * from './lib/ontologies/ontologies.state-model';
 export * from './lib/ontology-class/ontology-class.state-model';
 export * from './lib/projects/projects.state-model';
+export * from './lib/resource/resource.state-model';
 export * from './lib/user/user.state-model';
 
 export * from './lib/lists/lists.state';
 export * from './lib/ontologies/ontologies.state';
 export * from './lib/ontology-class/ontology-class.state';
 export * from './lib/projects/projects.state';
+export * from './lib/resource/resource.state';
 export * from './lib/user/user.state';
 
 export * from './lib/model-interfaces';
diff --git a/libs/vre/shared/app-state/src/lib/model-interfaces.ts b/libs/vre/shared/app-state/src/lib/model-interfaces.ts
index 4b9327d494..6de01f3ec8 100644
--- a/libs/vre/shared/app-state/src/lib/model-interfaces.ts
+++ b/libs/vre/shared/app-state/src/lib/model-interfaces.ts
@@ -1,4 +1,12 @@
-import { ClassDefinition, IHasProperty, OntologyMetadata, PropertyDefinition, ReadOntology } from '@dasch-swiss/dsp-js';
+import {
+  ClassDefinition,
+  IHasProperty,
+  OntologyMetadata,
+  PropertyDefinition,
+  ReadOntology,
+  ReadProject,
+  ReadUser,
+} from '@dasch-swiss/dsp-js';
 import { PropertyInfoObject } from '@dasch-swiss/vre/shared/app-helper-services';
 
 export interface IKeyValuePairs<T> {
@@ -45,3 +53,10 @@ export interface IClassItemsKeyValuePairs {
     classItemsCount: number;
   };
 }
+
+export interface IResourceKeyValuePairs {
+  [key: string]: {
+    attachedUsers: ReadUser[];
+    attachedProjects: ReadProject[];
+  };
+}
diff --git a/libs/vre/shared/app-state/src/lib/resource/resource.actions.ts b/libs/vre/shared/app-state/src/lib/resource/resource.actions.ts
new file mode 100644
index 0000000000..654e4d9c58
--- /dev/null
+++ b/libs/vre/shared/app-state/src/lib/resource/resource.actions.ts
@@ -0,0 +1,18 @@
+export class GetAttachedUserAction {
+  static readonly type = '[Resource] Get Attached User';
+
+  constructor(
+    public resourceIri: string,
+    public identifier: string,
+    public idType: 'iri' | 'username' | 'email' = 'iri'
+  ) {}
+}
+
+export class GetAttachedProjectAction {
+  static readonly type = '[Resource] Get Attached Project';
+
+  constructor(
+    public resourceIri: string,
+    public projectIri: string
+  ) {}
+}
diff --git a/libs/vre/shared/app-state/src/lib/resource/resource.selectors.ts b/libs/vre/shared/app-state/src/lib/resource/resource.selectors.ts
new file mode 100644
index 0000000000..36e02f32c6
--- /dev/null
+++ b/libs/vre/shared/app-state/src/lib/resource/resource.selectors.ts
@@ -0,0 +1,22 @@
+import { ReadProject, ReadUser } from '@dasch-swiss/dsp-js';
+import { Selector } from '@ngxs/store';
+import { IKeyValuePairs } from '../model-interfaces';
+import { ResourceState } from './resource.state';
+import { ReourceStateModel } from './resource.state-model';
+
+export class ResourceSelectors {
+  @Selector([ResourceState])
+  static isLoading(state: ReourceStateModel): boolean {
+    return state.isLoading;
+  }
+
+  @Selector([ResourceState])
+  static attachedUsers(state: ReourceStateModel): IKeyValuePairs<ReadUser> {
+    return state.attachedUsers;
+  }
+
+  @Selector([ResourceState])
+  static attachedProjects(state: ReourceStateModel): IKeyValuePairs<ReadProject> {
+    return state.attachedProjects;
+  }
+}
diff --git a/libs/vre/shared/app-state/src/lib/resource/resource.state-model.ts b/libs/vre/shared/app-state/src/lib/resource/resource.state-model.ts
new file mode 100644
index 0000000000..753751f301
--- /dev/null
+++ b/libs/vre/shared/app-state/src/lib/resource/resource.state-model.ts
@@ -0,0 +1,8 @@
+import { ReadProject, ReadUser } from '@dasch-swiss/dsp-js';
+import { IKeyValuePairs } from '../model-interfaces';
+
+export class ReourceStateModel {
+  isLoading = false;
+  attachedUsers: IKeyValuePairs<ReadUser> = {};
+  attachedProjects: IKeyValuePairs<ReadProject> = {};
+}
diff --git a/libs/vre/shared/app-state/src/lib/resource/resource.state.ts b/libs/vre/shared/app-state/src/lib/resource/resource.state.ts
new file mode 100644
index 0000000000..7234e68b9e
--- /dev/null
+++ b/libs/vre/shared/app-state/src/lib/resource/resource.state.ts
@@ -0,0 +1,106 @@
+import { Injectable } from '@angular/core';
+import { ReadProject } from '@dasch-swiss/dsp-js';
+import { ProjectApiService, UserApiService } from '@dasch-swiss/vre/shared/app-api';
+import { Action, State, StateContext, Store } from '@ngxs/store';
+import { map, take } from 'rxjs/operators';
+import { ProjectsSelectors } from '../projects/projects.selectors';
+import { UserSelectors } from '../user/user.selectors';
+import { GetAttachedProjectAction, GetAttachedUserAction } from './resource.actions';
+import { ReourceStateModel } from './resource.state-model';
+
+const defaults = <ReourceStateModel>{
+  isLoading: false,
+  attachedProjects: {},
+  attachedUsers: {},
+};
+
+@State<ReourceStateModel>({
+  defaults,
+  name: 'resource',
+})
+@Injectable()
+export class ResourceState {
+  constructor(
+    private store: Store,
+    private _userApiService: UserApiService,
+    private _projectApiService: ProjectApiService
+  ) {}
+
+  @Action(GetAttachedUserAction)
+  getAttachedUser(ctx: StateContext<ReourceStateModel>, { resourceIri, identifier, idType }: GetAttachedUserAction) {
+    const state = ctx.getState();
+    if (state.attachedUsers[resourceIri]) {
+      const attachedUserIndex = state.attachedUsers[resourceIri].value.findIndex(e => e.id === identifier);
+      if (attachedUserIndex > -1) {
+        return state.attachedUsers[resourceIri].value[attachedUserIndex];
+      }
+    } else {
+      state.attachedUsers[resourceIri] = { value: [] };
+    }
+
+    ctx.patchState({ isLoading: true });
+    const user = this.store.selectSnapshot(UserSelectors.allUsers).find(u => u.id === identifier);
+    if (user) {
+      state.attachedUsers[resourceIri].value.push(user);
+      ctx.setState({
+        ...state,
+        isLoading: false,
+      });
+
+      return user;
+    }
+
+    return this._userApiService.get(identifier, idType).pipe(
+      take(1),
+      map(response => {
+        state.attachedUsers[resourceIri].value.push(response.user);
+        ctx.patchState({
+          ...state,
+          isLoading: false,
+        });
+
+        return response.user;
+      })
+    );
+  }
+
+  @Action(GetAttachedProjectAction)
+  getAttachedProject(ctx: StateContext<ReourceStateModel>, { resourceIri, projectIri }: GetAttachedProjectAction) {
+    const state = ctx.getState();
+    if (state.attachedProjects[resourceIri]) {
+      const attachedProjectIndex = state.attachedProjects[resourceIri].value.findIndex(e => e.id === projectIri);
+      if (attachedProjectIndex > -1) {
+        return state.attachedProjects[resourceIri].value[attachedProjectIndex];
+      }
+    } else {
+      state.attachedProjects[resourceIri] = { value: [] };
+    }
+
+    ctx.patchState({ isLoading: true });
+    const project = this.store
+      .selectSnapshot(ProjectsSelectors.allProjects)
+      .find(u => u.id === projectIri) as ReadProject;
+    if (project) {
+      state.attachedProjects[resourceIri].value.push(project);
+      ctx.setState({
+        ...state,
+        isLoading: false,
+      });
+
+      return project;
+    }
+
+    return this._projectApiService.get(projectIri).pipe(
+      take(1),
+      map(response => {
+        state.attachedProjects[resourceIri].value.push(response.project);
+        ctx.setState({
+          ...state,
+          isLoading: false,
+        });
+
+        return response.project;
+      })
+    );
+  }
+}
diff --git a/libs/vre/shared/app-state/src/store.module.ts b/libs/vre/shared/app-state/src/store.module.ts
index 2ca12bdd80..50536c4980 100644
--- a/libs/vre/shared/app-state/src/store.module.ts
+++ b/libs/vre/shared/app-state/src/store.module.ts
@@ -6,9 +6,17 @@ import { NgxsModule } from '@ngxs/store';
 import { CurrentPageState } from './lib/current-page/current-page.state';
 import { CustomRouterStateSerializer } from './lib/router/router-state.serializer';
 import { DEVTOOLS_REDUX_CONFIG, LOGGER_CONFIG, OPTIONS_CONFIG } from './store.config';
-import { ListsState, OntologiesState, OntologyClassState, ProjectsState, UserState } from './index';
+import { ListsState, OntologiesState, OntologyClassState, ProjectsState, ResourceState, UserState } from './index';
 
-const STATE_MODULES = [UserState, ProjectsState, CurrentPageState, OntologiesState, ListsState, OntologyClassState];
+const STATE_MODULES = [
+  UserState,
+  ProjectsState,
+  CurrentPageState,
+  OntologiesState,
+  ListsState,
+  OntologyClassState,
+  ResourceState,
+];
 
 @NgModule({
   exports: [NgxsModule],