ALFSEN, E. M.; HOLM, P. A Note in Compact Representations and Almost Periodicity in Topological Groups. MATHEMATICA SCANDINAVICA, [S. l.], v. 10, p. 127–136, 1962. DOI: 10.7146/math.scand.a-10519. Disponível em: https://www.mscand.dk/article/view/10519. Acesso em: 5 may. 2024.