%0 Journal Article %A Musso, Monica %A Pejsachowicz, Jacobo %A Portaluri, Alessandro %T Morse index and bifurcation of $p$-geodesics on semi riemannian manifolds %J ESAIM: Control, Optimisation and Calculus of Variations %D 2007 %P 598-621 %V 13 %N 3 %I EDP-Sciences %U http://www.numdam.org/articles/10.1051/cocv:2007037/ %R 10.1051/cocv:2007037 %G en %F COCV_2007__13_3_598_0