@article{GDZPPN001263021, title = {Ideal nil-extensions of semigroups with semimodular congruence lattices.}, journal = {Semigroup forum}, volume = {46}, year = {1993}, pages = {353-358}, zbl = {0789.20068}, url = {http://dml.mathdoc.fr/item/GDZPPN001263021} }
Wang, L.M. Ideal nil-extensions of semigroups with semimodular congruence lattices.. Semigroup forum, Tome 46 (1993) pp. 353-358. http://gdmltest.u-ga.fr/item/GDZPPN001263021/