Gutlyanskiĭ, V. ., O. . Nesmelova, V. . Ryazanov, and A. . Yefimushkin. “Logarithmic Capacity and Riemann and Hilbert Problems for Generalized Analytic Functions”. Reports of the National Academy of Sciences of Ukraine, no. 8, Mar. 2024, pp. 11-18, doi:10.15407/dopovidi2020.08.011.