@inproceedings{STOC-1989-SafraV,
	author        = "Shmuel Safra and Moshe Y. Vardi",
	booktitle     = "{Proceedings of the 21st Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/73007.73019",
	isbn          = "0-89791-307-8",
	pages         = "127--137",
	publisher     = "{ACM}",
	title         = "{On ω-Automata and Temporal Logic}",
	year          = 1989,
}