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Author: Zhang, B. G.

• Zhang, B. G.; Sun, Y. J.: Existence of nonoscillatory solutions of a class of nonlinear difference equations with a forced term. (English). Mathematica Bohemica, vol. 126 (2001), issue 3, pp. 639-647
• 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