@inproceedings{DAC-1967-Richards,
	author        = "Donald L. Richards",
	booktitle     = "{Proceedings of the Fourth Design Automation Conference}",
	doi           = "10.1145/800270.810873",
	publisher     = "{ACM}",
	title         = "{SWAP — a programming system for automatic simulation, wiring and placement of logical equations}",
	year          = 1967,
}