Y. A. . Neretin, “On tensor products of unitary representations $SL_3(R)$”, Ukr. Mat. Zhurn., vol. 40, no. 2, pp. 240–241, Feb. 1988, Accessed: Dec. 06, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/9124