IZUMI, Masaki. On the type III principal graphs of subfactors. MATHEMATICA SCANDINAVICA, [S. l.], v. 73, p. 307–319, 1993. DOI: 10.7146/math.scand.a-12473. Disponível em: https://tidsskrift.dk/math/article/view/12473. Acesso em: 14 aug. 2026.