@inproceedings{STOC-1987-Fortnow,
	author        = "Lance Fortnow",
	booktitle     = "{Proceedings of the 19th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/28395.28418",
	isbn          = "0-89791-221-7",
	pages         = "204--209",
	publisher     = "{ACM}",
	title         = "{The Complexity of Perfect Zero-Knowledge}",
	year          = 1987,
}