%0 Journal Article %A Viktor L. Ginzburg %A Başak Gürel %T A $C^2$-smooth counterexample to the Hamiltonian Seifert conjecture in $\mathbb{R}^4$ %J Annals of mathematics %D 2003 %P 953-976 %V 158 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4007/annals.2003.158.953/ %R 10.4007/annals.2003.158.953 %G en %F 10_4007_annals_2003_158_953