Petrov, A. G. Asymptotic integration of Hamiltonian systems. (Russian) Zbl 1485.70016 Mekh. Tverd. Tela 35, 84-91 (2005). MSC: 70H05 Hamilton’s equations 37J06 General theory of finite-dimensional Hamiltonian and Lagrangian systems, Hamiltonian and Lagrangian structures, symmetries, invariants 70H15 Canonical and symplectic transformations for problems in Hamiltonian and Lagrangian mechanics PDFBibTeX XMLCite \textit{A. G. Petrov}, Mekh. Tverd. Tela 35, 84--91 (2005; Zbl 1485.70016) Full Text: Link