LAWRYNOWICZ, J.; TAMMI, O. On estimating of a fourth order functional for bounded univalent functions. Annales Fennici Mathematici, [S. l.], n. 490, 1971. DOI: 10.5186/aasfm.1971.490. Disponível em: https://afm.journal.fi/article/view/134146. Acesso em: 26 nov. 2024.