@article{GDZPPN001247751, title = {On semigroups admitting ring structure.}, journal = {Semigroup forum}, volume = {2}, year = {1971}, pages = {43-50}, zbl = {0228.20061}, url = {http://dml.mathdoc.fr/item/GDZPPN001247751} }
Satyanarayana, M. On semigroups admitting ring structure.. Semigroup forum, Tome 2 (1971) pp. 43-50. http://gdmltest.u-ga.fr/item/GDZPPN001247751/