@article{GDZPPN001264494, title = {E-free objects and E-locality for completely regular semigroups.}, journal = {Semigroup forum}, volume = {51}, year = {1995}, pages = {357-378}, zbl = {0836.20083}, url = {http://dml.mathdoc.fr/item/GDZPPN001264494} }
Jones, P.R. E-free objects and E-locality for completely regular semigroups.. Semigroup forum, Tome 51 (1995) pp. 357-378. http://gdmltest.u-ga.fr/item/GDZPPN001264494/