DOVHOPIATYI , O. P.; SEVOST’YANOV , E. A. On the existence of solutions of quasilinear Beltrami equations with two characteristics. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 74, n. 7, p. 961–972, 2022. DOI: 10.37863/umzh.v74i7.7088. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/7088. Acesso em: 5 dec. 2025.