BALK, M. Polyanalytical functions of constant modulus. Lithuanian Mathematical Journal, [S. l.], v. 6, n. 1, p. 31–36, 1966. DOI: 10.15388/LMJ.1966.19652. Disponível em: https://www.journals.vu.lt/LMJ/article/view/19652.. Acesso em: 30 apr. 2024.