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The complex WKB method in nonlinear equations. (Kompleksnyj metod VKB v nelinejnykh uravneniyakh). (Russian) Zbl 0449.58001
Nelinejnyj Analiz i ego Prilozheniya. Moskva: Izdatel’stvo ”Nauka”. 384 p. R. 1.60 (1977).

58-02 Research exposition (monographs, survey articles) pertaining to global analysis
37J99 Dynamical aspects of finite-dimensional Hamiltonian and Lagrangian systems
35Q99 Partial differential equations of mathematical physics and other areas of application
81T99 Quantum field theory; related classical field theories
81Q99 General mathematical topics and methods in quantum theory
53D50 Geometric quantization
58J40 Pseudodifferential and Fourier integral operators on manifolds
70H99 Hamiltonian and Lagrangian mechanics