@inproceedings{TOOLS-EUROPE-1993-Sylla,
	author        = "Karl-Heinz Sylla",
	booktitle     = "{Proceedings of the 10th International Conference on Technology of Object-Oriented Languages and Systems}",
	isbn          = "0-13-097114-6",
	pages         = "255--258",
	publisher     = "{Prentice Hall}",
	title         = "{Associated Paper: Modeling Concepts used by Professionals}",
	year          = 1993,
}