@inproceedings{DAC-1981-RobertsBJ,
	acmid         = "802363",
	author        = "Kenneth A. Roberts and Thomas E. Baker and David H. Jerome",
	booktitle     = "{Proceedings of the 18th Design Automation Conference}",
	pages         = "595--602",
	publisher     = "{ACM/IEEE}",
	title         = "{A vertically organized computer-aided design data base}",
	year          = 1981,
}