Analog of Neumann's theorem in class $W_2^{(1)}(\Omega)$
English version (Springer): Ukrainian Mathematical Journal 31 (1979), no. 3, pp 251-253.
Citation Example: Saak E. M. Analog of Neumann's theorem in class $W_2^{(1)}(\Omega)$ // Ukr. Mat. Zh. - 1979. - 31, № 3. - pp. 325–329.
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