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3. A. M. Samoilenko, "Generalized mean-value theorem for an analytic function and an algorithm for the evaluation of the function of mean values," Ukr. Mat. Zh., 69, No. 6, 765-787 (2017)
4. English translation: Ukr. Math. J., 69, No. 6, 892-915 (2017).
5. L. D. Kudryavtsev, “Problems with initial asymptotic data for systems of ordinary differential equations,” Dokl. Ros. Akad. Nauk, 407, No. 2, 172–175 (2006).