@inproceedings{SIGMOD-1993-Watters,
	author        = "Aaron Watters",
	booktitle     = "{Proceedings of the 23rd ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD93/P367.PDF",
	doi           = "10.1145/170035.170089",
	pages         = "367--376",
	publisher     = "{ACM Press}",
	title         = "{Interpreting a Reconstructed Relational Calculus}",
	year          = 1993,
}