@inproceedings{DAC-1973-So,
	acmid         = "803995",
	author        = "Hing-Cheung So",
	booktitle     = "{Proceedings of the 10th Design Automation Workshop}",
	pages         = "33--43",
	publisher     = "{ACM}",
	title         = "{Pin assignment of circuit cards and the routability of multilayer printed wiring backplanes}",
	year          = 1973,
}