TAYLOR, Jonathan. Essential Cartan subalgebras of $C^*$-algebras. MATHEMATICA SCANDINAVICA, [S. l.], v. 131, n. 3, 2025. DOI: 10.7146/math.scand.a-160113. Disponível em: https://www.mscand.dk/article/view/160113. Acesso em: 7 dec. 2025.