@inproceedings{LFP-1988-Henglein,
	author        = "Fritz Henglein",
	booktitle     = "{Proceedings of the 1988 ACM Conference on LISP and Functional Programming}",
	doi           = "10.1145/62678.62701",
	isbn          = "0-89791-273-X",
	pages         = "184--197",
	publisher     = "{ACM Press}",
	title         = "{Type Inference and Semi-Unification}",
	year          = 1988,
}