scientific article; zbMATH DE number 5070048
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zbMath1106.37042MaRDI QIDQ5394959
Vassili Gelfreich, Lev M. Lerman
Publication date: 1 November 2006
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Averaging method for ordinary differential equations (34C29) Oscillation theory, zeros, disconjugacy and comparison theory for ordinary differential equations (34C10) Perturbations of finite-dimensional Hamiltonian systems, normal forms, small divisors, KAM theory, Arnol'd diffusion (37J40)