Covering a reduced spherical body by a disk von Musielak, M., Musielak, M.

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Widths of classes of functions in the weight space $L_{2,\gamma}(\mathbb{R}), \gamma=\exp(-x^2)$ von Vakarchuk, S. B., Вакарчук, С. Б.

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Exact values of widths for the classes of functions defined by the averaged smoothness characteristics and majorants in the space $L_2$ von Vakarchuk, S., Zabutna, V., Vakarchuk, M., Вакарчук, Сергій, Забутна, Валентина, Вакарчук, Михайло

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