Yamanouchi, Takehiko. “On the Dominancy of Minimal Actions of Compact Kac Algebras and Certain Automorphisms in $\mathrm{Aut}(A/A^\alpha)$”. MATHEMATICA SCANDINAVICA 84, no. 2 (June 1, 1999): 297–319. Accessed May 6, 2024. https://www.mscand.dk/article/view/13881.