%0 Journal Article %A Kadison, Lars %T An action-free characterization of weak Hopf-Galois extensions. %J Algebra Montpellier announcements %D 2005 %V 2005 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AMA_2005__2005_1_125418/ %G en %F AMA_2005__2005_1_125418