@inproceedings{SOSP-1985-Clark,
	author        = "David D. Clark",
	booktitle     = "{Proceedings of the 10th ACM Symposium on Operating System Principles}",
	doi           = "10.1145/323647.323645",
	isbn          = "0-89791-174-1",
	pages         = "171--180",
	publisher     = "{ACM}",
	title         = "{The Structuring of Systems Using Upcalls}",
	year          = 1985,
}