@article{SOSP-J-1975-Howard76,
	author        = "John H. Howard",
	doi           = "10.1145/360051.360079",
	journal       = "{Communications of the ACM}",
	number        = 5,
	pages         = "273--279",
	publisher     = "{ACM}",
	title         = "{Proving Monitors}",
	volume        = 19,
	year          = 1976,
}