@article{MASLO_1992__42_1_a4, author = {Rudolf, Boris}, title = {Existence theorems for nonlinear operator equation $Lu+Nu=f$ and some properties of the set of its solutions}, journal = {Mathematica slovaca}, pages = {55--63}, publisher = {mathdoc}, volume = {42}, number = {1}, year = {1992}, mrnumber = {1159491}, zbl = {0744.34025}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1992__42_1_a4/} }