@inproceedings{POPL-1977-Lang,
	author        = "Bernard Lang",
	booktitle     = "{Conference Record of the Fourth Symposium on Principles of Programming Languages}",
	cdrom         = "POPL/00001446.PDF",
	doi           = "10.1145/512950.512972",
	editor        = "Robert M. Graham and Michael A. Harrison and Ravi Sethi",
	pages         = "227--237",
	publisher     = "{ACM}",
	title         = "{Threshold Evaluation and the Semantics of Call by Value, Assignment and Generic Procedures}",
	year          = 1977,
}