1. Reversible systems;Arnold,1984
2. Mathematical Aspects of Classical and Celestial Mechanics;Arnold,2006
3. Oscillations and bifurcations in reversible systems;Arnold,1986
4. Bifurcation of the birth of invariant tori with infinitesimal frequency;Bibikov;St. Petersburg Math. J.,1999
5. Stability of zero solutions of essentially nonlinear one-degree-of-freedom Hamiltonian and reversible systems;Bibikov;Differ. Equ.,2002