FÉLIX, Y.; HALPERIN, S. The depth and LS category of a topological space. MATHEMATICA SCANDINAVICA, [S. l.], v. 123, n. 2, p. 220–238, 2018. DOI: 10.7146/math.scand.a-106920. Disponível em: https://www.mscand.dk/article/view/106920. Acesso em: 23 nov. 2024.