%0 Journal Article %A Svante Janson %T Characterisations of H... by singular intetgral transforms on martingales and R... %J Mathematica Scandinavica %D 1977 %P 140-152 %V 41 %I mathdoc %U http://geodesic.mathdoc.fr/item/MS2_1977__41_166547/ %F MS2_1977__41_166547