TkachenkoV. I. (2002) “On Reducibility of Systems of Linear Differential Equations with Quasiperiodic Skew-Adjoint Matrices”, Ukrains’kyi Matematychnyi Zhurnal, 54(3), pp. 419-424. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4079 (Accessed: 27July2024).