%0 Journal Article %A McFadden, R. B. %T Unit-regular orthodox semigroups %J Glasgow mathematical journal %D 1984 %P 229-240 %V 25 %N 2 %U http://geodesic.mathdoc.fr/articles/10.1017/S0017089500005656/ %R 10.1017/S0017089500005656 %F 10_1017_S0017089500005656