@inproceedings{publication-3090,
	author={Xia, Yong and Glinz, Martin},
	booktitle={Proceedings of the Tenth Asia-Pacific Software Engineering Conference (APSEC’03)},
	month={DEC},
	number=8037994,
	pages={186- 196},
	title={Rigorous EBNF-based Definition for a Graphic Modeling Language},
	year=2003,
}