@article{GDZPPN001260022, title = {Maximizing a congruence with respect to its partition of idempotents.}, journal = {Semigroup forum}, volume = {38}, year = {1989}, pages = {257-262}, zbl = {0662.20047}, url = {http://dml.mathdoc.fr/item/GDZPPN001260022} }
Edwards, P.M. Maximizing a congruence with respect to its partition of idempotents.. Semigroup forum, Tome 38 (1989) pp. 257-262. http://gdmltest.u-ga.fr/item/GDZPPN001260022/