@inproceedings{POPL-1979-AhoU,
	author        = "Alfred V. Aho and Jeffrey D. Ullman",
	booktitle     = "{Conference Record of the Sixth Annual Symposium on Principles of Programming Languages}",
	cdrom         = "['POPL/00001702.PDF', 'POPLs1/POPL1979/P110.PDF']",
	doi           = "10.1145/567752.567763",
	editor        = "Alfred V. Aho and Stephen N. Zilles and Barry K. Rosen",
	pages         = "110--120",
	publisher     = "{ACM Press}",
	title         = "{The Universality of Data Retrieval Languages}",
	year          = 1979,
}