GRUBB, Gerd. The sectorial projection defined from logarithms. Mathematica Scandinavica, Berkeley, CA, United States, v. 111, n. 1, p. 118–126, 2012. DOI: 10.7146/math.scand.a-15217. Disponível em: https://journals.msp.org/mscand/article/view/480. Acesso em: 24 jul. 2026.