@article{SF_1990__41_2_135053,
     author = {A.G. Sokolsky},
     title = {Radicals of semigroup rings of orthogroups.},
     journal = {Semigroup forum},
     pages = {253--266},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {1990},
     zbl = {0701.20041},
     url = {http://geodesic.mathdoc.fr/item/SF_1990__41_2_135053/}
}