SIERRA, José Carlos. Surfaces in $G(1,5)$ with one apparent double point. Mathematica Scandinavica, Berkeley, CA, United States, v. 96, n. 2, p. 190–202, 2005. DOI: 10.7146/math.scand.a-14952. Disponível em: https://journals.msp.org/mscand/article/view/745. Acesso em: 24 jul. 2026.