1. The theory of perturbations in nonlinear mechanics;Bogolyubov,1950
2. Asymptotic Methods in the Theory of Non-linear Oscillations;Bogolyubov,1961
3. Synchronization of Dynamical Systems;Blekhman,1971
4. Vibrational Mechanics. Nonlinear Dynamic Effects, General Approach, Applications;Blekhman,2000
5. Dinamique Generale des vibrations;Rocard,1949