KOFANOV, V. Bojanov–Naidenov problem for differentiable functions and the Erdös problem for polynomials and splines. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 75, n. 2, p. 182–197, 2023. DOI: 10.37863/umzh.v75i2.7259. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/7259. Acesso em: 5 dec. 2025.