Grinchenko, L. “Collocation Method of Systems of Linear Equations With Variable Koefficients. ”. COMPUTER-INTEGRATED TECHNOLOGIES: EDUCATION, SCIENCE, PRODUCTION, no. 37 (December 28, 2019): 60-65. Accessed April 12, 2025. https://cit.lntu.edu.ua/index.php/cit/article/view/40.