Krzysztof Czarnecki, Jean-Marie Favre, Martin Gogolla, Tom Mens. Essentials of the 4th UML/MoDELS Workshop in Software Model Engineering (WiSME 2005). In Jean-Michel Bruel, editor, Satellite Events at the MoDELS 2005 Conference, MoDELS 2005 International Workshops, Doctoral Symposium, Educators Symposium, Montego Bay, Jamaica, October 2-7, 2005, Revised Selected Papers. Volume 3844 of Lecture Notes in Computer Science, pages 151-158, Springer, 2005. [doi]