@inproceedings{SEKE-2012-Cao,
	author        = "Zining Cao",
	booktitle     = "{Proceedings of the 24th International Conference on Software Engineering and Knowledge Engineering}",
	isbn          = "1-891706-31-4",
	pages         = "525--530",
	publisher     = "{Knowledge Systems Institute Graduate School}",
	title         = "{Modal ZIA, Modal Refinement Relation and Logical Characterization}",
	year          = 2012,
}