TY - BOOK AU - Samoilenko, A.M. TI - Countable systems of differential equations SN - 9067643939 U1 - 515.35 PY - 2003/// CY - Netherland PB - Ridderprint KW - Differential equations N1 - 1. General concepts of the theory of infinite systems of differential equations 2. Invariant tori 3. Reducibility of linear systems 4. Impulsive systems ER -