PANNENBERG, Michael. Stable rank of Fourier algebras and an application to Korovkin theory. Mathematica Scandinavica, Berkeley, CA, United States, v. 67, p. 299–319, 1990. DOI: 10.7146/math.scand.a-12340. Disponível em: https://journals.msp.org/mscand/article/view/1339. Acesso em: 24 jul. 2026.