@article{GDZPPN001248367, title = {Actions by a bisimple w-semigroup.}, journal = {Semigroup forum}, volume = {4}, year = {1972}, pages = {248-251}, zbl = {0256.22003}, url = {http://dml.mathdoc.fr/item/GDZPPN001248367} }
Kelemen, C.F. Actions by a bisimple w-semigroup.. Semigroup forum, Tome 4 (1972) pp. 248-251. http://gdmltest.u-ga.fr/item/GDZPPN001248367/