KISS, E. W.; PÁLFY, P. P. A lattice of subgroups that is not embeddable into the subgroup lattice of an abelian group. MATHEMATICA SCANDINAVICA, [S. l.], v. 83, n. 2, p. 169–176, 1998. DOI: 10.7146/math.scand.a-13848. Disponível em: https://www.mscand.dk/article/view/13848. Acesso em: 4 may. 2024.