@inproceedings{POPL-1979-GullJ,
	author        = "W. E. Gull and Michael A. Jenkins",
	booktitle     = "{Conference Record of the Sixth Annual Symposium on Principles of Programming Languages}",
	doi           = "10.1145/567752.567770",
	editor        = "Alfred V. Aho and Stephen N. Zilles and Barry K. Rosen",
	pages         = "190--196",
	publisher     = "{ACM Press}",
	title         = "{Decisions for “Type” in APL}",
	year          = 1979,
}