Kodaka, K.; Teruya, Y. Inclusions of Unital $C^*$-Algebras of Index-Finite Type With Depth 2 Induced by Saturated Actions of Finite Dimensional $C^*$-Hopf Algebras. Math. Scand. 2009, 104 (2), 221-248. https://doi.org/10.7146/math.scand.a-15096.