Maheshwari , S., and R. K. Sharma. 2021. “A Note on Units in $\mathbb{F}_q SL(2, \mathbb{Z}_3)$”. Ukrains’kyi Matematychnyi Zhurnal 73 (8): 1147-52. https://umj.imath.kiev.ua/index.php/umj/article/view/588.