SAVCHUK, V. V. Best approximation of reproducing kernels of spaces of analytic functions . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 56, n. 7, p. 947–959, 2004. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3811. Acesso em: 5 dec. 2025.