Philip Langer, Maximilian Koegel. Integrating Open-Source Modeling Projects: Collaborative Modeling with Papyrus and EMF Compare. In Francis Bordeleau, Jean-Michel Bruel, Juergen Dingel, Sebastien Gerard, Sebastian Voss, editors, Proceedings of the International Workshop on Open Source Software for Model Driven Engineering co-located with ACM/IEEE 18th International Conference on Model Driven Engineering Languages and Systems (MODELS 2015), Ottawa, Canada, September 29, 2015. Volume 1541 of CEUR Workshop Proceedings, pages 30-37, CEUR-WS.org, 2015. [doi]