IZUMI, Masaki. On the type III principal graphs of subfactors. Mathematica Scandinavica, Berkeley, CA, United States, v. 73, p. 307–319, 1993. DOI: 10.7146/math.scand.a-12473. Disponível em: https://journals.msp.org/mscand/article/view/1197. Acesso em: 24 jul. 2026.