@book{94470,
	author = {PLILP '90 and Deransart, Pierre, and International Workshop PLILP '90},
	title = {Programming language implementation and logic programming : International Workshop PLILP '90, Linkoping, Sweden, August 20-22, 1990 : proceedings /},
	publisher = {Springer,},
	year = {1990},
	address = {Berlin :}
}