%0 Journal Article
%A Qi-Ru Wang
%T Interval criteria for oscillation of second order
 self-adjoint matrix differential systems
%J Annales Polonici Mathematici
%D 2003
%P 87-93
%V 82
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/ap82-1-10/
%R 10.4064/ap82-1-10
%G en
%F 10_4064_ap82_1_10