License update to include other papers, too

LICENSE

@@ -24,6 +24,10 @@ corrections of defects with regard to the Software. The authors nevertheless
 reserve the right to update, modify, or discontinue the Software at any time.
 
 The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software. You agree to cite the Evaluation
-of Optimised Centres of Rotation Skinning paper in documents and papers that
+copies or substantial portions of the Software. You agree to cite the papers
+"Evaluation of Optimised Centres of Rotation Skinning",
+"Joint-dependent local deformations for hand animation and object grasping",
+"Skinning with dual quaternions"
+and "Real-time skeletal skinning with optimized centers of rotation"
+in documents and papers that
 report on research using this Software.

README.md

@@ -1,4 +1,4 @@
-# CoRCalculator - Library to Compute Centres of Rotation for [Optimised Centres of Rotation Skinning][1]
+# CoRCalculator - Library to Compute Centres of Rotation for [Optimised Centres of Rotation Skinning][3]
 An example on how to use the library is given in `example.cpp`.
 
 The CMake file is tested on Linux and Windows.
@@ -15,22 +15,27 @@ On Windows, finding GLM may require some changes, as we do it manually.
 ### Shader
 We provide GLSL vertex shader logic for these three skeletal skinning techniques:
 
-* **[Linear Blend Skinning (LBS)](http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.14.9310)**
-* **[Dual Quaternion Skinning (DQS)](https://dl.acm.org/citation.cfm?id=1230107)**
-* **[Optimised Centres of Rotation Skinning (CRS)][1]**.
+* **[Linear Blend Skinning (LBS)][1]**
+* **[Dual Quaternion Skinning (DQS)][2]**
+* **[Optimised Centres of Rotation Skinning (CRS)][3]**.
 
 The file `skeletons.glsl` contains the `perform_skinning` function, that computes one of these three methods, depending on a uniform variable.
 The files `quaternion.glsl` and `dualquaternion.glsl` each contain utility functions for their respective mathematics and have to be compiled
 together with the vertex shader because they are required by `skeletons.glsl`.
 We split these files so that you may pick what you need, since the `skeletons.glsl` file has to be customized anyway (especially the layout locations of the attributes).
 
-[1]: https://dl.acm.org/citation.cfm?id=2925959
 
 ### Citation
 This repository contains code corresponding to:
 
 [P. Bittner, JP Tauscher, S. Grogorick, M. Magnor. Evaluation of Optimised Centres of Rotation Skinning. In _Proc. International Conference on Computational Visual Media (CVM)_ 2019](https://graphics.tu-bs.de/publications/bittner2019evaluation)
 
+[N.  Magnenat-Thalmann,  R.  Laperrire,  and  D. Thalmann. Joint-dependent local deformations for hand animation and object grasping. In _Proceedings on Graphics interface’88. Citeseer_, 1988](1)
+
+[L. Kavan, S. Collins, J.Žára, and C. O'Sullivan. Skinning with dual quaternions. In _Proceedings of the 2007 symposium on Interactive 3D graphics and games, pages 39–46.ACM_, 2007](2)
+
+[B. H. Le and J. K. Hodgins. Real-time skeletal skinning with optimized centers of rotation. _ACM Transactions on Graphics (TOG)_, 35(4):37, 2016](3)
+
 Please cite as:
 
     @inproceedings{bittner2019evaluation,
@@ -68,6 +73,14 @@ corrections of defects with regard to the Software. The authors nevertheless
 reserve the right to update, modify, or discontinue the Software at any time.
 
 The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software. You agree to cite the Evaluation
-of Optimised Centres of Rotation Skinning paper in documents and papers that
-report on research using this Software.
+copies or substantial portions of the Software. You agree to cite the papers
+"Evaluation of Optimised Centres of Rotation Skinning",
+"Joint-dependent local deformations for hand animation and object grasping",
+"Skinning with dual quaternions"
+and "Real-time skeletal skinning with optimized centers of rotation"
+in documents and papers that
+report on research using this Software.
+
+[1]: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.14.9310
+[2]: https://dl.acm.org/citation.cfm?id=1230107
+[3]: https://dl.acm.org/citation.cfm?id=2925959