@inproceedings{DAC-1972-SchulerU,
	author        = "Donald M. Schuler and Ernst G. Ulrich",
	booktitle     = "{Proceedings of the Ninth Design Automation Workshop}",
	doi           = "10.1145/800153.804929",
	pages         = "50--56",
	publisher     = "{ACM}",
	title         = "{Clustering and linear placement}",
	year          = 1972,
}