FILEVYCH, P. V. On the London theorem concerning the Borel relation for entire functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 50, n. 11, p. 1578–1580, 1998. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4814. Acesso em: 5 dec. 2025.