Differential Equations & Applications · Volume 1, Issue 4 Multiplicity of 2-nodal solutions for a semilinear elliptic equation 01-28 Pages 497-515 DOI 10.7153/dea-01-28 Downloads Short PDF Full PDF PNG Authors Tsung-fang Wu Keywords semilinear elliptic equations multiple nodal solutions Palais-Smale Subject classes 35J60 35J20 35J25