偶数阶非线性偏差变元微分方程解的振动性

阎树栋, 何学中

OSCILLATION OF EVEN ORDER NONLINEAR DIFFERENTIAL EQUATION WITH DEVIATING ARGUMENTS

Yan Shu-dong, He Xue-zhong

应用数学学报 . 1992, (1): 136 -144 . DOI: 10.12387/C1992015