TY  - JOUR
AU  - Qi-Ru Wang
TI  - Interval criteria for oscillation of second order
 self-adjoint matrix differential systems
JO  - Annales Polonici Mathematici
PY  - 2003
SP  - 87
EP  - 93
VL  - 82
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ap82-1-10/
DO  - 10.4064/ap82-1-10
LA  - en
ID  - 10_4064_ap82_1_10
ER  -