(1992). Extensions of logic programming: Second international workshop, ELP '91, Stockholm, Sweden, January 27-29, 1991, proceedings / L.H. Eriksson, L. Hallnäs, P. SchroederHeister (eds.).
Chicagoスタイル(17版)引用形式Extensions of Logic Programming: Second International Workshop, ELP '91, Stockholm, Sweden, January 27-29, 1991, Proceedings / L.H. Eriksson, L. Hallnäs, P. SchroederHeister (eds.). 1992.
MLA(9版)引用形式Extensions of Logic Programming: Second International Workshop, ELP '91, Stockholm, Sweden, January 27-29, 1991, Proceedings / L.H. Eriksson, L. Hallnäs, P. SchroederHeister (eds.). 1992.
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