@inproceedings{STOC-1994-MaG,
	author        = "Keju Ma and Joachim von zur Gathen",
	booktitle     = "{Proceedings of the 26th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/195058.195204",
	isbn          = "0-89791-663-8",
	pages         = "392--401",
	publisher     = "{ACM}",
	title         = "{The computational complexity of recognizing permutation functions}",
	year          = 1994,
}