%0 Journal Article %A Manuel Gonzalez %T Dual results of factorization for operators %J Annales Fennici Mathematici %D 1993 %P 355-367 %V 18 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/AFM_1993_18_2_a8/ %G en %F AFM_1993_18_2_a8