%0 Journal Article %A Jean-Christophe Aval %A Philippe Duchon %T Enumeration of alternating sign matrices of even size (quasi-)Invariant under a quarter-turn rotation %J The electronic journal of combinatorics %D 2010 %V 17 %U http://geodesic.mathdoc.fr/articles/10.37236/323/ %R 10.37236/323 %F 10_37236_323