@article{GDZPPN002409658,
title = {On a Method of Singular Perturbation Type for Proving the Solvability of Nonlinear Functional Equations in Banach Spaces.},
journal = {Mathematische Zeitschrift},
volume = {121},
year = {1971},
pages = {355-362},
zbl = {0216.13202},
url = {http://dml.mathdoc.fr/item/GDZPPN002409658}
}
Hess, Peter. On a Method of Singular Perturbation Type for Proving the Solvability of Nonlinear Functional Equations in Banach Spaces.. Mathematische Zeitschrift, Tome 121 (1971) pp. 355-362. http://gdmltest.u-ga.fr/item/GDZPPN002409658/