%0 Journal Article
%A Cheng, Yi-Hsin
%A Wu, Tsung-Fang
%T Existence and multiplicity of positive solutions for indefinite semilinear elliptic problems in $\Bbb R^N$
%J Electronic Journal of Differential Equations
%D 2014
%V 2014
%I mathdoc
%U http://geodesic.mathdoc.fr/item/EJDE_2014__2014__a198/
%G en
%F EJDE_2014__2014__a198