Dadarlat, Marius, and Wilhelm Winter. “On the $KK$-Theory of Strongly Self-Absorbing $C^{*}$-Algebras”. Mathematica Scandinavica 104, no. 1 (March 1, 2009): 95–107. Accessed July 24, 2026. https://journals.msp.org/mscand/article/view/611.