@article {GySM83,
	title = {{An implementation of the HLP}},
	journal = {Acta Cybernetica - Szeged},
	volume = {6},
	number = {3},
	year = {1983},
	pages = {315-327},
	author = {Tibor Gyim{\'o}thy and E. Simon and {\'A}. Makay}
}
