%0 Journal Article %A Simon M. Goberstein %T Fundamental order relations on inverse semigroups and on their generalizations. %J Semigroup forum %D 1980 %P 285-328 %V 21 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1980__21_134454/ %F SF_1980__21_134454