Periodic solutions of nonlinear systems of neutral partial differential equations
English version (Springer): Ukrainian Mathematical Journal 21 (1969), no. 4, pp 407-417.
Citation Example: Mitropolskiy Yu. A., Tkach B. P. Periodic solutions of nonlinear systems of neutral partial differential equations // Ukr. Mat. Zh. - 1969. - 21, № 4. - pp. 475–486.
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