1. B. F. Bylov, R. E. Vinograd, D.M. Grobman, and V. V. Nemytskii, The Theory of Lyapunov Exponents and Its Applications to the Problems of Stability [in Russian], Nauka, Moscow (1966).
2. S. A. Mazanik, Lyapunov Transformations of Linear Differential Systems [in Russian], BGU, Minsk (2008)