$K$-functionals and extreme problems of the theory of approximation for classes of analytic functions in the circle. I by Vakarchuk, S. B., Vakarchuk, M. B., Вакарчук, С. Б., Вакарчук, М. Б.

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$K$-functionals and extreme problems of the theory of approximation of the classes of analytic functions in a circle. II by Vakarchuk, S. B., Vakarchuk, M. B., Вакарчук, С. Б., Вакарчук, М. Б.

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On total moduli of continuity for $2\pi$-periodic functions of two variables in the space $L_{2,2}$ by Vakarchuk, M. B., Vakarchuk, S. B., Вакарчук, М. Б., Вакарчук, С. Б., Вакарчук, М. Б., Вакарчук, С. Б.

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On the exponential decay of vibrations of damped elastic media by Vakarchuk, M. B., Vakarchuk, S. B., Вакарчук, М. Б., Вакарчук, С. Б., Вакарчук, М. Б., Вакарчук, С. Б.

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On inequalities of Kolmogorov-Hörmander type for functions bounded on a discrete net by Babenko, V. F., Vakarchuk, M. B., Бабенко, В. Ф., Вакарчук, М. Б., Бабенко, В. Ф., Вакарчук, М. Б.

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