Chuiko, Sergey, Yaroslav Kalinichenko, and Mykyta Popov. “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 900 (December 23, 2019): 26-41. Accessed April 26, 2024. https://periodicals.karazin.ua/mech_math/article/view/14947.