International Symposium on Programming Language Implementation and Logic Programming,PLILP 91.International Symposium on Programming Language Implementation and Logic Programming(3rd : 1991 : Passau)：programming language Implementation and Logic Programming : proceedings.Springer,1991.
International Symposium on Programming Language Implementation and Logic Programming(3rd : 1991 : Passau)：programming language Implementation and Logic Programming : proceedings
International Symposium on Programming Language Implementation and Logic Programming,PLILP 91.Springer,1991.
