@inproceedings{TOOLS-ASIA-1999-LiuLZO,
	author        = "Chengfei Liu and Xuemin Lin and Xiaofang Zhou and Maria E. Orlowska",
	booktitle     = "{Proceedings of the 31st International Conference on Technology of Object-Oriented Languages and Systems}",
	doi           = "10.1109/TOOLS.1999.796505",
	isbn          = "0-7695-0393-4",
	pages         = "348--357",
	publisher     = "{IEEE Computer Society}",
	title         = "{Building a Repository for Workflow Systems}",
	year          = 1999,
}