%0 Journal Article %A N. Parhi %A P. Praharaj %T Oscillation criteria for second order self-adjoint matrix differential equations %J Annales Polonici Mathematici %D 1999 %P 1-14 %V 72 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/ap-72-1-1-14/ %R 10.4064/ap-72-1-1-14 %G en %F 10_4064_ap_72_1_1_14