%0 Journal Article %A Pacella, Filomena %T Note on spectral theory of nonlinear operators: Extensions of some surjectivity theorems of Fučík and Nečas %J Czechoslovak Mathematical Journal %D 1984 %P 28-45 %V 34 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1984.101924/ %R 10.21136/CMJ.1984.101924 %G en %F 10_21136_CMJ_1984_101924