@inproceedings{STOC-1990-FeigeS,
	author        = "Uriel Feige and Adi Shamir",
	booktitle     = "{Proceedings of the 22nd Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/100216.100272",
	isbn          = "0-89791-361-2",
	pages         = "416--426",
	publisher     = "{ACM}",
	title         = "{Witness Indistinguishable and Witness Hiding Protocols}",
	year          = 1990,
}