Gutlyanskiĭ V, Ryazanov V, Sevost’yanov E, Yakubov E. Hydrodynamic normalization conditions in the theory of degenerate Beltrami equations. Dopov. Nac. akad. nauk Ukr. [Internet]. 2023 May 3 [cited 2026 Apr. 18];(2):10-7. Available from: https://nasu-periodicals.org.ua/index.php/dp/article/view/2023-2-2