@article{GDZPPN001259318, title = {Residual finiteness in completely regular semigroup varieties.}, journal = {Semigroup forum}, volume = {37}, year = {1988}, pages = {127-148}, zbl = {0627.20032}, url = {http://dml.mathdoc.fr/item/GDZPPN001259318} }
Trotter, P.G.; Pastijn, F.J. Residual finiteness in completely regular semigroup varieties.. Semigroup forum, Tome 37 (1988) pp. 127-148. http://gdmltest.u-ga.fr/item/GDZPPN001259318/