@inproceedings{POPL-1980-Lamport,
	author        = "Leslie Lamport",
	booktitle     = "{Conference Record of the Seventh Annual Symposium on Principles of Programming Languages}",
	doi           = "10.1145/567446.567463",
	editor        = "Paul W. Abrahams and Richard J. Lipton and Stephen R. Bourne",
	isbn          = "0-89791-011-7",
	pages         = "174--185",
	publisher     = "{ACM Press}",
	title         = "{“Sometime” is Sometimes “Not Never” — On the Temporal Logic of Programs}",
	year          = 1980,
}