@inproceedings{SLP-1984-PortoF84,
	author        = "António Porto and Miguel Filgueiras",
	booktitle     = "{Proceedings of the First International Symposium on Logic Programming}",
	isbn          = "0-8186-0522-7",
	pages         = "228--232",
	publisher     = "{IEEE-CS}",
	title         = "{Natural Language Semantics: A Logic Programming Approach}",
	year          = 1984,
}