On the approximate solution of a nonlinear system of differential equations of higher order with a retarded argument
English version (Springer): Ukrainian Mathematical Journal 22 (1970), no. 3, pp 332-339.
Citation Example: Kovach Yu. I. On the approximate solution of a nonlinear system of differential equations of higher order with a retarded argument // Ukr. Mat. Zh. - 1970. - 22, № 3. - pp. 380–388.
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