@inproceedings{DAC-2006-ShamYC,
	author        = "Chiu-Wing Sham and Evangeline F. Y. Young and Chris C. N. Chu",
	booktitle     = "{Proceedings of the 43rd Design Automation Conference}",
	doi           = "10.1145/1146909.1147189",
	isbn          = "1-59593-381-6",
	pages         = "1109--1114",
	publisher     = "{ACM}",
	title         = "{Optimal cell flipping in placement and floorplanning}",
	year          = 2006,
}