Mazko, A. G. “Localization of the Spectrum and Representation of Solutions of Linear Dynamical Systems”. Ukrains’kyi Matematychnyi Zhurnal 50, no. 10 (October 25, 1998): 1341–1351. Accessed February 17, 2026. https://umj.imath.kiev.ua/index.php/umj/article/view/4820.