COSTA, Antonio F.; IZQUIERDO, Milagros. On real trigonal Riemann surfaces. Mathematica Scandinavica, Berkeley, CA, United States, v. 98, n. 1, p. 53–68, 2006. DOI: 10.7146/math.scand.a-14983. Disponível em: https://journals.msp.org/mscand/article/view/714. Acesso em: 24 jul. 2026.