@inproceedings{STOC-1989-KaoS,
	author        = "Ming-Yang Kao and Gregory E. Shannon",
	booktitle     = "{Proceedings of the 21st Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/73007.73034",
	isbn          = "0-89791-307-8",
	pages         = "286--296",
	publisher     = "{ACM}",
	title         = "{Local Reorientation, Global Order, and Planar Topology}",
	year          = 1989,
}