%0 Journal Article %A S.A. Rankin %A C.M. Reis %A M.L. Wang %T Globally Abelian transformation semigroups. %J Semigroup forum %D 1976 %P 221-228 %V 13 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1976__13_134215/ %F SF_1976__13_134215