KLEE, V. On the Borelian and Projective Types of Linear Subspaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 6, p. 189–199, 1958. DOI: 10.7146/math.scand.a-10543. Disponível em: https://www.mscand.dk/article/view/10543. Acesso em: 28 apr. 2024.