@inproceedings{STOC-1982-RuzzoST,
	author        = "Walter L. Ruzzo and Janos Simon and Martin Tompa",
	booktitle     = "{Proceedings of the 14th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/800070.802194",
	isbn          = "0-89791-067-2",
	pages         = "215--223",
	publisher     = "{ACM}",
	title         = "{Space-Bounded Hierarchies and Probabilistic Computations}",
	year          = 1982,
}