@inproceedings{STOC-1971-Stanat,
	author        = "Donald F. Stanat",
	booktitle     = "{Proceedings of the Third Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800157.805033",
	pages         = "1--11",
	publisher     = "{ACM}",
	title         = "{Formal Languages and Power Series}",
	year          = 1971,
}