@inproceedings{STOC-1987-IwanoS,
	author        = "Kazuo Iwano and Kenneth Steiglitz",
	booktitle     = "{Proceedings of the 19th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/28395.28401",
	isbn          = "0-89791-221-7",
	pages         = "46--55",
	publisher     = "{ACM}",
	title         = "{Testing for Cycles in Infinite Graphs with Periodic Structure}",
	year          = 1987,
}