%0 Journal Article %A Souček, Jiří %A Souček, Vladimír %T On the spectrum of a nonlinear operator %J Czechoslovak Mathematical Journal %D 1974 %P 614-663 %V 24 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1974.101280/ %R 10.21136/CMJ.1974.101280 %G en %F 10_21136_CMJ_1974_101280