Kodaka Kazunori: The Picard groups for unital inclusions of unital C∗-algebras. In: Acta scientiarum mathematicarum 86. pp. 183-207. (2020)
Kodaka Kazunori: Coactions on a UHF-algebra induced by a regular coaction of a C*-Hopf algebra on the C*-algebra generated by a Hilbert space. In: Acta scientiarum mathematicarum, (83) 1-2. pp. 223-242. (2017)