SILVANOVICH, Olga V.; SHIROKOV, Nikolai A. Approximation by entire functions on a countable union of segments on the real axis. 4. Inverse theorem. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, [S. l.], v. 5, n. 3, p. 441–451, 2020. Disponível em: https://math-mech-astr-journal.spbu.ru/article/view/8504. Acesso em: 18 may. 2024.