1. Alekseev, V. M.: Symbolic Dynamics. Naukova Dumka, Kiev, 1986. The 11th Mathematical School. (in Russian)
2. Alexandre, N. Carvalho, Jose, A. Langa, James, C. Robinson: Attractors for infinite-dimensional non-autonomous dynamical systems. Applied Mathematical Sciences, Volume 182. Springer, New York, 2013
3. Babin, A.V., Vishik, M.I.: Regular attractors of semigroups and evolution equations. Journal of Mathematics Pure and Applications 62, 441–491 (1983)
4. Babin, A. V., Vishik, M.I.: Attractors of evolution equations North Holland, Amsterdam
5. Bronstein, I.U.: Nonautonomous Dynamical Systems. Ştiintsa, Chişinău (1984). (in Russian)