WU, Ta-sun. Regularly related lattices in locally compact groups. Mathematica Scandinavica, Berkeley, CA, United States, v. 72, p. 29–32, 1993. DOI: 10.7146/math.scand.a-12434. Disponível em: https://journals.msp.org/mscand/article/view/1192. Acesso em: 25 jul. 2026.