GUSTAVSSON, J. A function parameter in connection with interpolation of Banach spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 42, p. 289–305, 1978. DOI: 10.7146/math.scand.a-11754. Disponível em: https://www.mscand.dk/article/view/11754. Acesso em: 6 may. 2024.