Enomoto, M., M. Nagisa, and Y. Watatani. “Relative Commutant Algebras of Powers’ Binary Shifts on the Hyperfinite $\mathrm{II}_1$ Factor”. MATHEMATICA SCANDINAVICA 68 (December 1, 1991): 115–130. Accessed November 23, 2024. https://www.mscand.dk/article/view/12350.