POPA, S. Notes on Cartan subalgebras in type $\mathrm{II}_1$ factors. MATHEMATICA SCANDINAVICA, [S. l.], v. 57, p. 171–188, 1985. DOI: 10.7146/math.scand.a-12110. Disponível em: https://www.mscand.dk/article/view/12110. Acesso em: 14 apr. 2025.