@inproceedings{STOC-1999-CaiNS,
	author        = "Jin-yi Cai and Ajay Nerurkar and D. Sivakumar",
	booktitle     = "{Proceedings of the 31st Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/301250.301444",
	isbn          = "1-58113-067-8",
	pages         = "726--735",
	publisher     = "{ACM}",
	title         = "{Hardness and Hierarchy Theorems for Probabilistic Quasi-Polynomial Time}",
	year          = 1999,
}