@inproceedings{POPL-1978-AshcroftW,
	author        = "Edward A. Ashcroft and William W. Wadge",
	booktitle     = "{Conference Record of the Fifth Annual Symposium on Principles of Programming Languages}",
	doi           = "10.1145/512760.512763",
	editor        = "Alfred V. Aho and Stephen N. Zilles and Thomas G. Szymanski",
	pages         = "17--22",
	publisher     = "{ACM Press}",
	title         = "{Clauses: Scope Structures and Defined Functions in Lucid}",
	year          = 1978,
}