@inproceedings{SIGMOD-1988-Lohman,
	author        = "Guy M. Lohman",
	booktitle     = "{Proceedings of the 18th ACM SIGMOD International Conference on Management of Data}",
	cdrom         = "SIGMOD88/P018.PDF",
	doi           = "10.1145/50202.50204",
	pages         = "18--27",
	title         = "{Grammar-like Functional Rules for Representing Query Optimization Alternatives}",
	year          = 1988,
}