YEFIMUSHKIN, A. S.; RYAZANOV, V. I. On the Riemann–Hilbert problem for analytic functions in circular domains . Reports of the National Academy of Sciences of Ukraine, Kyiv, Ukraine, n. 2, p. 13–16, 2024. DOI: 10.15407/dopovidi2016.02.013. Disponível em: https://nasu-periodicals.org.ua/index.php/dp/article/view/8159. Acesso em: 23 dec. 2024.