Functions with isolated critical points on the boundary of a nonoriented surface von B. I. Hladysh

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Deformations in the general position of the optimal functions on oriented surfaces with boundary von B. I. Hladysh, O. O. Pryshliak

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Functions with nondegenerate critical points on the boundary of the surface von B. I. Hladysh, O. O. Pryshliak

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