TY - JOUR AU - Kadison, Lars TI - An action-free characterization of weak Hopf-Galois extensions. JO - Algebra Montpellier announcements PY - 2005 VL - 2005 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/AMA_2005__2005_1_125418/ LA - en ID - AMA_2005__2005_1_125418 ER -