%0 Journal Article %A Cao, Dao-Min %T Multiple solutions of a semilinear elliptic equation in $\mathbb {R}^N$ %J Annales de l'I.H.P. Analyse non linéaire %D 1993 %P 593-604 %V 10 %N 6 %I Gauthier-Villars %U http://www.numdam.org/item/AIHPC_1993__10_6_593_0/ %G en %F AIHPC_1993__10_6_593_0