GROMOVA, Larisa L. Fourth coefficient estimate in the class of univalent functions with quasiconformal extensions. Scientia Series A: Mathematical Sciences, [S. l.], v. 9, p. 27–31, 2025. DOI: 10.71712/. Disponível em: https://revistas.usm.cl/scientia/article/view/239.. Acesso em: 19 aug. 2025.