A. Evans, R. France, K. Lano, и B. Rumpe. &\#171;UML&\#187; '98: Selected papers from the First International Workshop on The Unified Modeling Language &\#171;UML&\#187;'98, стр. 336--348. London, UK, Springer-Verlag, (1999)
J. Pleumann, и S. Haustein. UML 2003 - The Unified Modeling Language. Model Languages and Applications. 6th International Conference, San Francisco, CA, USA, October 2003, Proceedings, том 2863 из LNCS, стр. 190--204. Springer, (2003)