@article{MZ_1977__155_172551,
     author = {Svatopluk Fucik and Miroslav Krbec},
     title = {Boundary {Value} {Problems} with {Bounded} {Nonlinearity} and {General} {Null-Space} of the {Linear} part.},
     journal = {Mathematische Zeitschrift},
     pages = {129--138},
     publisher = {mathdoc},
     volume = {155},
     year = {1977},
     zbl = {0337.35034},
     url = {http://geodesic.mathdoc.fr/item/MZ_1977__155_172551/}
}