%0 Journal Article
%A Peter Hess
%T On a Method of Singular Perturbation Type for Proving the Solvability of Nonlinear Functional Equations in Banach Spaces.
%J Mathematische Zeitschrift
%D 1971
%P 355-362
%V 122
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1971__122_171612/
%F MZ_1971__122_171612