@inproceedings{SIGMOD-1975-Gotlieb,
	author        = "Leo R. Gotlieb",
	booktitle     = "{Proceedings of the Fifth ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD75/P055.PDF",
	doi           = "10.1145/500080.500089",
	pages         = "55--63",
	publisher     = "{ACM}",
	title         = "{Computing Joins of Relations}",
	year          = 1975,
}