DEKIMPE, Karel. Groups in action: from Euclidean to polynomial crystallographic groups. CUBO, A Mathematical Journal, [S. l.], v. 6, n. 1, p. 81–101, 2004. Disponível em: https://cubo.ufro.cl/index.php/cubo/article/view/1648. Acesso em: 11 oct. 2025.