%0 Journal Article %A Lin Li %A Shapour Heidarkhani %T Existence of three solutions to a double eigenvalue problem for the $p$-biharmonic equation %J Annales Polonici Mathematici %D 2012 %P 71-80 %V 104 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap104-1-5/ %R 10.4064/ap104-1-5 %G en %F 10_4064_ap104_1_5