GUTLYANSKIĬ, V. .; RYAZANOV, V. .; SEVOST’YANOV, E. .; YAKUBOV, E. . Hydrodynamic normalization conditions in the theory of degenerate Beltrami equations. Reports of the National Academy of Sciences of Ukraine, Kyiv, Ukraine, n. 2, p. 10–17, 2023. DOI: 10.15407/dopovidi2023.02.010. Disponível em: https://nasu-periodicals.org.ua/index.php/dp/article/view/2023-2-2. Acesso em: 18 apr. 2026.