Samoilenko, Y. S., and K. Y. Yushchenko. “On the Group $C^{*}$-Algebras of a Semidirect Product of Commutative and Finite Groups”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 57, no. 5, May 2005, pp. 697–705, https://umj.imath.kiev.ua/index.php/umj/article/view/3636.