AYALA, R.; DOMINGUEZ, E.; MÁRQUEZ, A. On the Graphs which are the Edge of a Plane Tiling. MATHEMATICA SCANDINAVICA, [S. l.], v. 77, p. 5–16, 1995. DOI: 10.7146/math.scand.a-12545. Disponível em: https://www.mscand.dk/article/view/12545. Acesso em: 5 may. 2024.