@inproceedings{KR-1998-CheinMS,
	author        = "Michel Chein and Marie-Laure Mugnier and Geneviève Simonet",
	booktitle     = "{Proceedings of the Sixth International Conference on Principles of Knowledge Representation and Reasoning}",
	pages         = "524--535",
	publisher     = "{Morgan Kaufmann}",
	title         = "{Nested Graphs: A Graph-based Knowledge Representation Model with FOL Semantics}",
	year          = 1998,
}