YAMASHITA, S. Functions with $H^p$ hyperbolic derivative. MATHEMATICA SCANDINAVICA, [S. l.], v. 53, p. 238–244, 1983. DOI: 10.7146/math.scand.a-12031. Disponível em: https://www.mscand.dk/article/view/12031. Acesso em: 1 may. 2024.