@inproceedings{STOC-1979-SedgewickS,
	author        = "Robert Sedgewick and Thomas G. Szymanski",
	booktitle     = "{Proceedings of the 11th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800135.804400",
	pages         = "74--80",
	publisher     = "{ACM}",
	title         = "{The Complexity of Finding Periods}",
	year          = 1979,
}