@inproceedings{SIGMOD-1984-TsurZ,
	author        = "Shalom Tsur and Carlo Zaniolo",
	booktitle     = "{Proceedings of the 14th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD84/P286.PDF",
	doi           = "10.1145/602259.602297",
	pages         = "286--295",
	publisher     = "{ACM Press}",
	title         = "{An Implementation of GEM — Supporting a Semantic Data Model on a Relational Back-End}",
	year          = 1984,
}