Havlíček, M., Klimyk, A.U. and Pelantová, E. (1998) “Representations of the $q$-deformed algebra U$_q$(so$_4$) for $q$ a root of unity”, Methods of Functional Analysis and Topology, 4(3), pp. 39–44. Available at: https://zen.imath.kiev.ua/index.php/mfat/article/view/66 (Accessed: 19 December 2025).