%0 Journal Article
%A HEJUN, SUN
%A XUERONG, QI
%T EIGENVALUE ESTIMATES FOR QUADRATIC POLYNOMIAL OPERATOR OF THE LAPLACIAN
%J Glasgow mathematical journal
%D 2011
%P 321-332
%V 53
%N 2
%U http://geodesic.mathdoc.fr/articles/10.1017/S0017089510000728/
%R 10.1017/S0017089510000728
%F 10_1017_S0017089510000728