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@article{SF_1990__40_1_135016, author = {S. R. Nath}, title = {On classification of semigroup rings.}, journal = {Semigroup forum}, pages = {159--180}, publisher = {mathdoc}, volume = {40}, number = {1}, year = {1990}, zbl = {0683.16008}, url = {http://geodesic.mathdoc.fr/item/SF_1990__40_1_135016/} }
S. R. Nath. On classification of semigroup rings.. Semigroup forum, Tome 40 (1990) no. 1, pp. 159-180. http://geodesic.mathdoc.fr/item/SF_1990__40_1_135016/