GULICK, Denny. The $\sigma$-Compact-Open Topology and its Relatives. MATHEMATICA SCANDINAVICA, [S. l.], v. 30, p. 159–176, 1972. DOI: 10.7146/math.scand.a-11072. Disponível em: https://tidsskrift.dk/math/article/view/11072. Acesso em: 14 aug. 2026.