BUJALANCE, E. Automorphism groups of compact Klein surfaces with one boundary component. Mathematica Scandinavica, Berkeley, CA, United States, v. 59, p. 45–58, 1986. DOI: 10.7146/math.scand.a-12153. Disponível em: https://journals.msp.org/mscand/article/view/1516. Acesso em: 25 jul. 2026.