SJÖGREN, P. Characterisations of Poisson integrals on symmetric spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 49, p. 229–249, 1981. DOI: 10.7146/math.scand.a-11933. Disponível em: https://www.mscand.dk/article/view/11933. Acesso em: 29 apr. 2024.