@article{10_21136_CMJ_1974_101262,
     author = {Fu\v{c}{\'\i}k, Svatopluk},
     title = {Nonlinear equations with noninvertible linear part},
     journal = {Czechoslovak Mathematical Journal},
     pages = {467--495},
     publisher = {mathdoc},
     volume = {24},
     number = {3},
     year = {1974},
     doi = {10.21136/CMJ.1974.101262},
     mrnumber = {0348568},
     zbl = {0315.47038},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1974.101262/}
}