Toeplitz algebras and infinite simple $C^*$-algebras associated with reduced group $C^*$-algebras.

Zhang, S. (1997). Toeplitz algebras and infinite simple $C^*$-algebras associated with reduced group $C^*$-algebras. MATHEMATICA SCANDINAVICA, 81, 86–100. https://doi.org/10.7146/math.scand.a-12867