%0 Journal Article %A Michal Fečkan %T Nontrivial critical points of asymptotically quadratic functions at resonances %J Annales Polonici Mathematici %D 1997 %P 43-57 %V 67 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-67-1-43-57/ %R 10.4064/ap-67-1-43-57 %G en %F 10_4064_ap_67_1_43_57