“Boundary Value Problems for Systems of Non-Degenerate Difference-Algebraic Equations”. Visnyk of V. N. Karazin Kharkiv National University. Ser. Mathematics, Applied Mathematics and Mechanics 90 (December 23, 2019): 26–41. Accessed October 24, 2026. https://periodicals.karazin.ua/mech_math/article/view/14947.