@article{SF_1994__48_3_135292,
     author = {A.V. Kelarev},
     title = {Radicals of semigroup rings of commutative semigroups.},
     journal = {Semigroup forum},
     pages = {1--17},
     year = {1994},
     volume = {48},
     number = {3},
     zbl = {0793.16018},
     url = {http://geodesic.mathdoc.fr/item/SF_1994__48_3_135292/}
}