HILLE, Einar. On some generalizations of the Malmquist theorem. Mathematica Scandinavica, Berkeley, CA, United States, v. 39, p. 59–79, 1976. DOI: 10.7146/math.scand.a-11644. Disponível em: https://journals.msp.org/mscand/article/view/2004. Acesso em: 25 jul. 2026.