%0 Journal Article %A OkniĊ„ski, Jan %T Prime and semiprime semigroup rings of cancellative semigroups %J Glasgow mathematical journal %D 1993 %P 1-12 %V 35 %N 1 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500009514/ %R 10.1017/S0017089500009514 %F 10_1017_S0017089500009514