共 50 条
- [43] On the oscillation of second-order perturbed nonlinear difference equations [J]. DYNAMIC SYSTEMS AND APPLICATIONS, 2006, 15 (3-4): : 537 - 547
- [46] Oscillation theorems for second-order nonlinear neutral dynamic equations with variable delays and damping [J]. World Academy of Science, Engineering and Technology, 2011, 74 : 797 - 805
- [50] New oscillation theorems for a class of second-order damped nonlinear differential equations [J]. Ukrainian Mathematical Journal, 2012, 63 : 1441 - 1457