@article{GDZPPN001258958, title = {Regular semigroups with a medial idempotent.}, journal = {Semigroup forum}, volume = {36}, year = {1987}, pages = {69-74}, zbl = {0627.20035}, url = {http://dml.mathdoc.fr/item/GDZPPN001258958} }
Loganathan, M. Regular semigroups with a medial idempotent.. Semigroup forum, Tome 36 (1987) pp. 69-74. http://gdmltest.u-ga.fr/item/GDZPPN001258958/