@inproceedings{STOC-1974-Valiant,
	author        = "Leslie G. Valiant",
	booktitle     = "{Proceedings of the Sixth Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800119.803881",
	pages         = "27--32",
	publisher     = "{ACM}",
	title         = "{The Decidability of Equivalence for Deterministic Finite-Turn Pushdown Automata}",
	year          = 1974,
}