[1]
A. G. Mazko, “Distribution of the spectrum and representation of solutions of degenerate dynamical systems”, Ukr. Mat. Zhurn., vol. 50, no. 7, pp. 930–936, Jul. 1998, Accessed: Feb. 17, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/4873