Atlasiuk О.М., and Mikhailets V.А. “On Fredholm Parameter-Dependent Boundary-Value Problems in Sobolev Spaces”. Reports of the National Academy of Sciences of Ukraine, no. 6 (March 28, 2024): 3–6. Accessed May 26, 2025. https://nasu-periodicals.org.ua/index.php/dp/article/view/2020-6-1.