@article{GDZPPN001255800, title = {Ideal Extensions of compact reductive semigroups.}, journal = {Semigroup forum}, volume = {24}, year = {1982}, pages = {283-290}, zbl = {0508.22006}, url = {http://dml.mathdoc.fr/item/GDZPPN001255800} }
Hildebrant, J.A. Ideal Extensions of compact reductive semigroups.. Semigroup forum, Tome 24 (1982) pp. 283-290. http://gdmltest.u-ga.fr/item/GDZPPN001255800/