FORELLI, Frank. Pluriharmonicity in terms of harmonic slices. Mathematica Scandinavica, Berkeley, CA, United States, v. 41, p. 358–364, 1977. DOI: 10.7146/math.scand.a-11728. Disponível em: https://journals.msp.org/mscand/article/view/1917. Acesso em: 25 jul. 2026.