GONG, Guihua; LIN, Huaxin. The Exponential Rank of Inductive Limit $C^*$-Algebras. Mathematica Scandinavica, Berkeley, CA, United States, v. 71, p. 301–319, 1992. DOI: 10.7146/math.scand.a-12431. Disponível em: https://journals.msp.org/mscand/article/view/1221. Acesso em: 25 jul. 2026.