Author: Yang, Bo

Graef, John R.; Kong, Lingju; Kong, Qingkai; Yang, Bo: Second order boundary value problems with sign-changing nonlinearities and nonhomogeneous boundary conditions. (English). Mathematica Bohemica, vol. 136 (2011), issue 4, pp. 337-356
Graef, John R.; Yang, Bo; Zhang, B. G.: Existence of nonoscillatory and oscillatory solutions of neutral differential equations with positive and negative coefficients. (English). Mathematica Bohemica, vol. 124 (1999), issue 1, pp. 87-102

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