@inproceedings{PODS-1990-Willard,
	author        = "Dan E. Willard",
	booktitle     = "{Proceedings of the Ninth Symposium on Principles of Database Systems}",
	cdrom         = "['journals/anthology/cd1-3:PODS90/P243.PDF', 'journals/anthology/dvd1:text/1-3/PODS90/P243.PDF']",
	doi           = "10.1145/298514.298570",
	isbn          = "0-89791-352-3",
	pages         = "243--257",
	publisher     = "{ACM Press}",
	title         = "{Quasilinear Algorithms for Processing Relational Calculus Expressions}",
	year          = 1990,
}