KODAKA, Kazunori; TERUYA, Yamotsu. Inclusions of unital $C^*$-algebras of index-finite type with depth 2 induced by saturated actions of finite dimensional $C^*$-Hopf algebras. Mathematica Scandinavica, Berkeley, CA, United States, v. 104, n. 2, p. 221–248, 2009. DOI: 10.7146/math.scand.a-15096. Disponível em: https://journals.msp.org/mscand/article/view/601. Acesso em: 24 jul. 2026.