KISS, E. W.; PÁLFY, P. P. A lattice of subgroups that is not embeddable into the subgroup lattice of an abelian group. Mathematica Scandinavica, Berkeley, CA, United States, v. 83, n. 2, p. 169–176, 1998. DOI: 10.7146/math.scand.a-13848. Disponível em: https://journals.msp.org/mscand/article/view/980. Acesso em: 25 jul. 2026.