%0 Journal Article %A Siegfried Graf %T Induced ...-Homomorphisms and a Parametrization of Measurable Sections via Extremal Preimage Measures. %J Mathematische Annalen %D 1980 %P 67-80 %V 247 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1980__247_163348/ %F MAN_1980__247_163348