%0 Journal Article
%A Herbert Amann
%T Existence and Multiplicity Theorems for Semi-linear Elliptic Boundary Value Problems.
%J Mathematische Zeitschrift
%D 1976
%P 281-295
%V 150
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZ_1976__150_172423/
%F MZ_1976__150_172423