1.
Bassi J. On $C^*$-algebras associated to actions of discrete subgroups of $\operatorname{SL}(2,\mathbb{R})$ on the punctured plane. Math. Scand. [Internet]. 2020Sep.3 [cited 2021Dec.3];126(3):540-58. Available from: https://www.mscand.dk/article/view/120288