@inproceedings{SEFM-2004-WuY,
	author        = "Jinzhao Wu and Houguang Yue",
	booktitle     = "{Proceedings of the Second International Conference on Software Engineering and Formal Methods}",
	doi           = "10.1109/SEFM.2004.47",
	isbn          = "0-7695-2222-X",
	pages         = "300--309",
	publisher     = "{IEEE Computer Society}",
	title         = "{Towards Action Refinement for Concurrent Systems with Causal Ambiguity}",
	year          = 2004,
}