@inproceedings{PODS-1991-Roy,
	author        = "Shaibal Roy",
	booktitle     = "{Proceedings of the 10th Symposium on Principles of Database Systems}",
	cdrom         = "['journals/anthology/cd1-3:PODS91/P259.PDF', 'journals/anthology/dvd1:text/1-3/PODS91/P259.PDF']",
	doi           = "10.1145/113413.113437",
	isbn          = "0-89791-430-9",
	pages         = "259--267",
	publisher     = "{ACM Press}",
	title         = "{Semantic Complexity of Classes of Relational Queries and Query Independent Data Partitioning}",
	year          = 1991,
}