BOAS, R. P. J. Inequalities for functions of exponential type. MATHEMATICA SCANDINAVICA, [S. l.], v. 4, p. 29–32, 1956. DOI: 10.7146/math.scand.a-10453. Disponível em: https://www.mscand.dk/article/view/10453. Acesso em: 11 apr. 2025.