OSCILLATION CRITERIA FOR SECOND ORDER NONLINEAR DIFFERENTIAL EQUATION WITH DAMPING
罗辉;庄容坤;郭兴明
OSCILLATION CRITERIA FOR SECOND ORDER NONLINEAR DIFFERENTIAL EQUATION WITH DAMPING
LUO Hui;ZHUANG Rong-kun;GUO Xing-ming
Applied Mathematics and Mechanics (English Edition) . 2005, (4): 441 -448 . 

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