DZINOTYIWEYI, H. A. M. Compactness criteria for semigroups, a note on a preceding paper. MATHEMATICA SCANDINAVICA, [S. l.], v. 46, p. 173–176, 1980. DOI: 10.7146/math.scand.a-11860. Disponível em: https://www.mscand.dk/article/view/11860. Acesso em: 23 jul. 2024.