Discovery of periodic solutions of nonlinear first-order systems with distributed parameters
English version (Springer): Ukrainian Mathematical Journal 33 (1981), no. 6, pp 587-593.
Citation Example: Khoma G. P. Discovery of periodic solutions of nonlinear first-order systems with distributed parameters // Ukr. Mat. Zh. - 1981. - 33, № 6. - pp. 779-786.
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