@article{GDZPPN001250183, title = {Semilattices of bisimple orthodox semigroups.}, journal = {Semigroup forum}, volume = {7}, year = {1974}, pages = {172-178}, zbl = {0288.20083}, url = {http://dml.mathdoc.fr/item/GDZPPN001250183} }
LaTorre, D.R. Semilattices of bisimple orthodox semigroups.. Semigroup forum, Tome 7 (1974) pp. 172-178. http://gdmltest.u-ga.fr/item/GDZPPN001250183/