%0 Journal Article %A Chabrowski, J. %A Yang, Jianfu %T Multiple solutions of a nonlinear elliptic equation involving Neumann conditions and a critical Sobolev exponent %J Rendiconti del Seminario Matematico della Università di Padova %D 2003 %P 1-24 %V 110 %I Seminario Matematico of the University of Padua %U http://archive.numdam.org/item/RSMUP_2003__110__1_0/ %G en %F RSMUP_2003__110__1_0