O. B. Chernobai, “On the Spectral Theory of Generalized Toeplitz Kernels”, Ukr. Mat. Zhurn., vol. 55, no. 6, pp. 850–857, Jun. 2003, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/3959