Update README.md

README.md

@@ -163,17 +163,20 @@ If you would like to contribute to `eo-learn`, check out our [contribution guide
    * [High-Level Concept](https://medium.com/sentinel-hub/area-monitoring-concept-effc2c262583)
    * [Data Handling](https://medium.com/sentinel-hub/area-monitoring-data-handling-c255b215364f)
    * [Outlier detection](https://medium.com/sentinel-hub/area-monitoring-observation-outlier-detection-34f86b7cc63)
+   * [Identifying built-up areas](https://medium.com/sentinel-hub/area-monitoring-how-to-train-a-binary-classifier-for-built-up-areas-7f2d7114ed1c)
    * [Similarity Score](https://medium.com/sentinel-hub/area-monitoring-similarity-score-72e5cbfb33b6)
    * [Bare Soil Marker](https://medium.com/sentinel-hub/area-monitoring-bare-soil-marker-608bc95712ae)
    * [Mowing Marker](https://medium.com/sentinel-hub/area-monitoring-mowing-marker-e99cff0c2d08)
+   * [Pixel-level Mowing Marker](https://medium.com/sentinel-hub/area-monitoring-pixel-level-mowing-marker-968402a8579b)
    * [Crop Type Marker](https://medium.com/sentinel-hub/area-monitoring-crop-type-marker-1e70f672bf44)
    * [Homogeneity Marker](https://medium.com/sentinel-hub/area-monitoring-homogeneity-marker-742047b834dc)
    * [Parcel Boundary Detection](https://medium.com/sentinel-hub/parcel-boundary-detection-for-cap-2a316a77d2f6)
    * Land Cover Classification (still to come)
    * Minimum Agriculture Activity (still to come)
    * [Combining the Markers into Decisions](https://medium.com/sentinel-hub/area-monitoring-combining-markers-into-decisions-d74f70fe7721)
-   * Traffic Light System (still to come)
-   * Expert Judgement Application (still to come)
+   * [The Challenge of Small Parcels](https://medium.com/sentinel-hub/area-monitoring-the-challenge-of-small-parcels-96121e169e5b)
+   * [Traffic Light System](https://medium.com/sentinel-hub/area-monitoring-traffic-light-system-4a1348481c40)
+   * [Expert Judgement Application](https://medium.com/sentinel-hub/expert-judgement-application-67a07f2feac4)
  * [Scale-up your eo-learn workflow using Batch Processing API](https://medium.com/sentinel-hub/scale-up-your-eo-learn-workflow-using-batch-processing-api-d183b70ea237) (by Maxim Lamare)