Lunyov, A. A., and E. V. Oliynyk. “On a Class of Systems of Equations of the Lax Type”. Reports of the National Academy of Sciences of Ukraine, no. 1 (January 8, 2025): 25–30. Accessed January 11, 2025. https://nasu-periodicals.org.ua/index.php/dp/article/view/12951.