@inproceedings{PLDI-1991-CallahanK,
	author        = "David Callahan and Brian Koblenz",
	booktitle     = "{Proceedings of the 12th Conference on Programming Language Design and Implementation}",
	doi           = "10.1145/113445.113462",
	editor        = "David S. Wise",
	isbn          = "0-89791-428-7",
	pages         = "192--203",
	publisher     = "{ACM}",
	title         = "{Register Allocation via Hierarchical Graph Coloring}",
	year          = 1991,
}