@inproceedings{CLP-1990-Sheng90,
	author        = "Yeh-Heng Sheng",
	booktitle     = "{Proceedings of the Seventh International Conference on Logic Programming}",
	isbn          = "0-262-73090-1",
	pages         = "529--545",
	publisher     = "{MIT Press}",
	title         = "{HIFUNLOG : Logic Programming with Higher-order Relational Functions}",
	year          = 1990,
}