@inproceedings{SIGMOD-1980-LuskOP,
	author        = "Ewing L. Lusk and Ross A. Overbeek and Bruce D. Parrello",
	booktitle     = "{Proceedings of the 10th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD80/P009.PDF",
	doi           = "10.1145/582250.582253",
	pages         = "9--21",
	publisher     = "{ACM Press}",
	title         = "{A Practical Design Methodology for the Implementation of IMS Databases, Using the Entity-Relationship Model}",
	year          = 1980,
}