@inproceedings{LFP-1988-Roylance,
	author        = "Gerald Roylance",
	booktitle     = "{Proceedings of the 1988 ACM Conference on LISP and Functional Programming}",
	doi           = "10.1145/62678.62680",
	isbn          = "0-89791-273-X",
	pages         = "8--13",
	publisher     = "{ACM Press}",
	title         = "{Expressing Mathematical Subroutines Constructively}",
	year          = 1988,
}