References
K. Bergner et al.: A Critical Look at UML1.0. in: The Unified Modelling Language - Technical Aspects and Applications, M. Schader and A. Korthaus (eds.), Physica-Verlag, 1998.
M. Fowler, UML Distilled: Applying the Standard Object Modeling Notation, Addison Wesley, 1997.
M. Hitz, G. Kappel: UML-Workshop: Objektorientierte Softwareentwicklung von der Analyse zur Realisierung, dpunkt Verlag, 1999 (to appear, in German).
C. Kobryn: UML RTF Status, http://uml.shl.com, 1999
J. Rumbaugh, I. Jacobson, G. Booch: The Unified Modeling Language Reference Manual, Addison Wesley, 1999