BACKLUND, U.; PERSSON, L. Seperable maximal pluriharmonic functions in two complex variables. MATHEMATICA SCANDINAVICA, [S. l.], v. 81, p. 260–268, 1997. DOI: 10.7146/math.scand.a-12879. Disponível em: https://www.mscand.dk/article/view/12879. Acesso em: 29 apr. 2024.