@article{GDZPPN001253891,
title = {F-regular and F-orthodox semigroups.},
journal = {Semigroup forum},
volume = {20},
year = {1980},
pages = {331-346},
zbl = {0432.20052},
url = {http://dml.mathdoc.fr/item/GDZPPN001253891}
}
Edwards, C.C. F-regular and F-orthodox semigroups.. Semigroup forum, Tome 20 (1980) pp. 331-346. http://gdmltest.u-ga.fr/item/GDZPPN001253891/