@article{GDZPPN002187515,
title = {Dense extensions of completely 0-simple semigroups. I.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {258},
year = {1973},
pages = {103-125},
zbl = {0256.20081},
url = {http://dml.mathdoc.fr/item/GDZPPN002187515}
}
Petrich, Mario. Dense extensions of completely 0-simple semigroups. I.. Journal für die reine und angewandte Mathematik, Tome 258 (1973) pp. 103-125. http://gdmltest.u-ga.fr/item/GDZPPN002187515/