%0 Journal Article %A MYRIAM MUÑOZ DE ÖZAK %T Lifting theorems for some classes of two parameters martingales %J Revista colombiana de matematicas %D 1998 %P 45-71 %V 32 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RCM_1998_32_1_a3/ %F RCM_1998_32_1_a3