@inproceedings{SOSP-1979-Needham,
	author        = "Roger M. Needham",
	booktitle     = "{Proceedings of the Seventh Symposium on Operating System Principles}",
	doi           = "10.1145/800215.806573",
	isbn          = "0-89791-009-5",
	pages         = "82--85",
	publisher     = "{ACM}",
	title         = "{Systems Aspects of the Cambridge Ring}",
	year          = 1979,
}