@inproceedings{STOC-1981-KimR,
	author        = "Chul E. Kim and Azriel Rosenfeld",
	booktitle     = "{Proceedings of the 13th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800076.802460",
	pages         = "80--89",
	publisher     = "{ACM}",
	title         = "{Digital Straightness and Convexity}",
	year          = 1981,
}