@inproceedings{STOC-1985-Huynh,
	author        = "Dung T. Huynh",
	booktitle     = "{Proceedings of the 17th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/22145.22190",
	pages         = "405--412",
	publisher     = "{ACM}",
	title         = "{The Complexity of the Equivalence Problem for Commutative Semigroups and Symmetric Vector Addition Systems}",
	year          = 1985,
}