@article{GDZPPN001248804, title = {On a sublattice- of the lattice of congruences on a 0-regular semigroup.}, journal = {Semigroup forum}, volume = {4}, year = {1972}, pages = {228-235}, zbl = {0265.20059}, url = {http://dml.mathdoc.fr/item/GDZPPN001248804} }
Baird, G.R. On a sublattice- of the lattice of congruences on a 0-regular semigroup.. Semigroup forum, Tome 4 (1972) pp. 228-235. http://gdmltest.u-ga.fr/item/GDZPPN001248804/