共 50 条
- [2] Frequent Oscillatory Behavior of Delay Partial Difference Equations with Positive and Negative Coefficients Advances in Difference Equations, 2010
- [6] Existence of positive solutions and oscillatory behaviour for neutral differential equations with positive and negative coefficients INDIAN JOURNAL OF PURE & APPLIED MATHEMATICS, 2001, 32 (08): : 1185 - 1199
- [8] Oscillation of neutral difference equations with positive and negative coefficients Journal of Natural Science of Hunan Normal University, 2001, 24 (01): : 1 - 4