1. EMF compare.
https://www.eclipse.org/emf/compare/
2. EMF Diff/Merge.
http://eclipse.org/diffmerge/
3. Evaluation of EMF Compare and Diff/Merge.
https://github.com/FTSRG/publication-pages/wiki/Evaluation-of-EMF-Diff-Merge-and-EMF-Compare
4. Mogentes EU project.
http://www.mogentes.eu/
5. Altmanninger, K., Kappel, G., Kusel, A., Retschitzegger, W., Seidl, M., Schwinger, W., Wimmer, M.: AMOR-towards adaptable model versioning. In: 1st International Workshop on Model Co-Evolution and Consistency Management, in conjunction with MODELS, vol. 8, pp. 4–50 (2008)