@inproceedings{TOOLS-ASIA-1999-WangLPZZ,
	author        = "Yunfeng Wang and Bixin Li and Jun Pang and Ming Zha and Guoliang Zheng",
	booktitle     = "{Proceedings of the 31st International Conference on Technology of Object-Oriented Languages and Systems}",
	doi           = "10.1109/TOOLS.1999.796492",
	isbn          = "0-7695-0393-4",
	pages         = "261--266",
	publisher     = "{IEEE Computer Society}",
	title         = "{A Formal Software Development Approach Based on COOZ and Refinement Calculus}",
	year          = 1999,
}