GORBACHUK, M. L.; GORBACHUK, V. M. On behavior at infinity of solutions of elliptic differential equations in a Banach space. Methods of Functional Analysis and Topology, [S. l.], v. 23, n. 2, p. 108–122, 2017. Disponível em: https://zen.imath.kiev.ua/index.php/mfat/article/view/657. Acesso em: 13 dec. 2025.