%0 Journal Article %A Frédéric Bourgeois %A Alexandru Oancea %T Fredholm theory and transversality for the parametrized and for the $S_1$-invariant symplectic action %J Journal of the European Mathematical Society %D 2010 %P 1181-1229 %V 12 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4171/jems/227/ %R 10.4171/jems/227 %F JEMS_2010_12_5_a4