TY - JOUR AU - Li, Wan-Tong AU - Zhuang, Rong-Kun TI - Interval oscillation criteria for second order forced nonlinear matrix differential equations JO - Electronic journal of differential equations PY - 2005 VL - 2005 UR - http://geodesic.mathdoc.fr/item/EJDE_2005__2005__a194/ LA - en ID - EJDE_2005__2005__a194 ER -