TY - BOOK AU - Borger E ED - Workshop on Computer Science Logic( 2nd : 1988 : Duisburg ) ED - Workshop on Computer Science Logic 2nd TI - Computer science logic : proceedings SN - 3-540-51659-X U1 - 5.131 PY - 1989/// CY - Berlin PB - Springer Verlag KW - Computer science ER -