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@article{AMA_2005__2005_1_125418, author = {Kadison, Lars}, title = {An action-free characterization of weak {Hopf-Galois} extensions.}, journal = {Algebra Montpellier announcements}, publisher = {mathdoc}, volume = {2005}, number = {1}, year = {2005}, zbl = {1078.16043}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AMA_2005__2005_1_125418/} }
Kadison, Lars. An action-free characterization of weak Hopf-Galois extensions.. Algebra Montpellier announcements, Tome 2005 (2005) no. 1. http://geodesic.mathdoc.fr/item/AMA_2005__2005_1_125418/