@article{GDZPPN001260669, title = {Radicals of semigroup rings of orthogroups.}, journal = {Semigroup forum}, volume = {40}, year = {1990}, pages = {253-266}, zbl = {0701.20041}, url = {http://dml.mathdoc.fr/item/GDZPPN001260669} }
Sokolsky, A.G. Radicals of semigroup rings of orthogroups.. Semigroup forum, Tome 40 (1990) pp. 253-266. http://gdmltest.u-ga.fr/item/GDZPPN001260669/