@inproceedings{KR-1996-Costello,
	author        = "Tom Costello",
	booktitle     = "{Proceedings of the Fifth International Conference on Principles of Knowledge Representation and Reasoning}",
	isbn          = "1-55860-421-9",
	pages         = "432--443",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Modeling Belief Change using Counterfactuals}",
	year          = 1996,
}