Foundation of the method of averaging for differential-difference equations in Hilbert space
English version (Springer): Ukrainian Mathematical Journal 23 (1971), no. 6, pp 607-612.
Citation Example: Fodchuk V. I., Mitropolskiy Yu. A. Foundation of the method of averaging for differential-difference equations in Hilbert space // Ukr. Mat. Zh. - 1971. - 23, № 6. - pp. 745–752.
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