@inproceedings{SIGMOD-1983-LaverMG,
	author        = "Kent Laver and Alberto O. Mendelzon and Marc H. Graham",
	booktitle     = "{Proceedings of the 13th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD83/P079.PDF",
	doi           = "10.1145/582192.582208",
	pages         = "79--91",
	publisher     = "{ACM Press}",
	title         = "{Functional Dependencies on Cyclic Database Schemes}",
	year          = 1983,
}