@inproceedings{POPL-1979-Harel,
	author        = "David Harel",
	booktitle     = "{Conference Record of the Sixth Annual Symposium on Principles of Programming Languages}",
	cdrom         = "POPL/00001699.PDF",
	doi           = "10.1145/567752.567760",
	editor        = "Alfred V. Aho and Stephen N. Zilles and Barry K. Rosen",
	pages         = "81--92",
	publisher     = "{ACM Press}",
	title         = "{Recursion in Logics of Programs}",
	year          = 1979,
}