R. Hatamleh and V. A. Zolotarev, “Jacobi operators and orthonormal matrix-valued polynomials. I”, Ukr. Mat. Zhurn., vol. 69, no. 2, pp. 228–239, Feb. 2017, Accessed: Apr. 13, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/1688