Gutlyanskiĭ, V.Ya., O.V. Nesmelova, and V.I. Ryazanov. “On Semilinear Equations in the Complex Plane”. Reports of the National Academy of Sciences of Ukraine, no. 7 (April 21, 2024): 9–16. Accessed April 18, 2026. https://nasu-periodicals.org.ua/index.php/dp/article/view/2200.