TkachenkoV. I. “On Linear Systems With Quasiperiodic Coefficients and Bounded Solutions”. Ukrains’kyi Matematychnyi Zhurnal 48, no. 1 (January 25, 1996): 109-115. Accessed July 27, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/5368.