Existence of a solution and averaging of nonlinear multifrequency problems with delay von Bigun, Ya. I., Бігун, Я. Й.

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Averaging of Oscillation Systems with Delay and Integral Boundary Conditions von Bigun, Ya. I., Бігун, Я. Й.

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Averaging of a multifrequency boundary-value problem with linearly transformed argument von Bigun, Ya. I., Бігун, Я. Й.

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Averaging method in multifrequency systems with delay von Bigun, Ya. I., Бігун, Я. Й.

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Existence, uniqueness, and dependence on a parameter of solutions of differential-functional equations with ordinary and partial derivatives von Bigun, Ya. I., Бігун, Я. Й.

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Numerical-analytic method for the investigation of multipoint boundary-value problems for systems of differential equations with transformed argument von Bigun, Ya. I., Filipchuk, M. P., Бігун, Я. Й., Філіпчук, М. П.

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