Andreieva, D. M., & Ignatovich, S. Y. (2022). Homogeneous approximation for minimal realizations of series of iterated integrals. Visnyk of V. N. Karazin Kharkiv National University. Ser. Mathematics, Applied Mathematics and Mechanics, 96, 23-39. https://doi.org/10.26565/2221-5646-2022-96-02