DERRY, D. Polygons of Order $n$ in $L_n$ with $n+2$ Vertices. MATHEMATICA SCANDINAVICA, [S. l.], v. 23, p. 73–95, 1968. DOI: 10.7146/math.scand.a-10899. Disponível em: https://www.mscand.dk/article/view/10899. Acesso em: 5 may. 2024.