@article{GDZPPN001248685, title = {The structure of bisimple orthodox semigroups as ordered pairs.}, journal = {Semigroup forum}, volume = {4}, year = {1972}, pages = {127-136}, zbl = {0264.20046}, url = {http://dml.mathdoc.fr/item/GDZPPN001248685} }
Clifford, A.H. The structure of bisimple orthodox semigroups as ordered pairs.. Semigroup forum, Tome 4 (1972) pp. 127-136. http://gdmltest.u-ga.fr/item/GDZPPN001248685/