Author: Oláh, Rudolf

Oláh, Rudolf: On positive solutions of nonlinear retarded differential equations. (English). Mathematica Slovaca, vol. 42 (1992), issue 2, pp. 201-210
Oláh, Rudolf: Integral conditions of oscillation of a linear differential equation. (English). Mathematica Slovaca, vol. 39 (1989), issue 3, pp. 323-329
Oláh, Rudolf: Note on the oscillation of differential equation with advanced argument. (English). Mathematica Slovaca, vol. 33 (1983), issue 3, pp. 241-248

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