On the existence of the Green function of the problem of the invariant torus
English version (Springer): Ukrainian Mathematical Journal 27 (1975), no. 3, pp 279-288.
Citation Example: Kulik V. L., Samoilenko A. M. On the existence of the Green function of the problem of the invariant torus // Ukr. Mat. Zh. - 1975. - 27, № 3. - pp. 348–359.
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