%0 Journal Article
%A Rong-Kun Zhuang
%A Zheng-an Yao
%T Some new oscillation criteria for second order 
elliptic equations with damping
%J Annales Polonici Mathematici
%D 2005
%P 31-42
%V 86
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/ap86-1-4/
%R 10.4064/ap86-1-4
%G en
%F 10_4064_ap86_1_4