@inproceedings{POPL-1994-BoylandG,
	author        = "John Boyland and Susan L. Graham",
	booktitle     = "{Conference Record of the 21st Symposium on Principles of Programming Languages}",
	doi           = "10.1145/174675.177971",
	editor        = "Hans-Juergen Boehm and Bernard Lang and Daniel M. Yellin",
	isbn          = "0-89791-636-0",
	pages         = "375--388",
	publisher     = "{ACM Press}",
	title         = "{Composing Tree Attributions}",
	year          = 1994,
}