@inproceedings{KR-1989-CrawfordK,
	author        = "James M. Crawford and Benjamin Kuipers",
	booktitle     = "{Proceedings of the First International Conference on Principles of Knowledge Representation and Reasoning}",
	isbn          = "1-55860-032-9",
	pages         = "67--78",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Towards a Theory of Access-Limited Logic for Knowledge Representation}",
	year          = 1989,
}