%0 Journal Article
%A Honghui Yin
%A Zuodong Yang
%T Multiplicity results for a class of concave-convex
elliptic systems involving  sign-changing weight functions
%J Annales Polonici Mathematici
%D 2011
%P 51-71
%V 102
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/ap102-1-5/
%R 10.4064/ap102-1-5
%G en
%F 10_4064_ap102_1_5