F. Butin, “Branching Law for the Finite Subgroups of $SL_4ℂ$ and the Related Generalized Poincaré Polynomials”, Ukr. Mat. Zhurn., vol. 67, no. 10, pp. 1321–1332, Oct. 2015, Accessed: Apr. 07, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2069