@inproceedings{SOSP-1977-FeiertagLR,
	author        = "Richard J. Feiertag and Karl N. Levitt and Lawrence Robinson",
	booktitle     = "{Proceedings of the Sixth Symposium on Operating System Principles}",
	doi           = "10.1145/800214.806547",
	pages         = "57--65",
	publisher     = "{ACM}",
	title         = "{Proving Multilevel Security of a System Design}",
	year          = 1977,
}