%0 Journal Article %A J.L. Galbiati %A M.L. Veronesi %T Congruences on semigroups which are perfect rectangular bands of inverse semigroups. %J Semigroup forum %D 1986 %P 309-330 %V 33 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1986__33_134817/ %F SF_1986__33_134817