@inproceedings{SOSP-1973-RitchieT,
	author        = "Dennis Ritchie and Ken Thompson",
	booktitle     = "{Proceedings of the Fourth Symposium on Operating System Principles}",
	doi           = "10.1145/800009.808045",
	pages         = "27",
	publisher     = "{ACM}",
	title         = "{The UNIX Time-Sharing System}",
	year          = 1973,
}