Oscillations Nonlinear theories 3 Asymptotic expansions 2 Differential equations 2 Differential equations, Nonlinear 2 Hydrofoils 2 Nonlinear mechanics 2 Waves 2 Almost periodic functions 1 Asymptotes 1 Bessel functions 1 Cavitation 1 Congresses 1 Conservation laws (Physics) 1 Control theory 1 Differential equations, Hyperbolic 1 Differential equations, Partial 1 Differential-difference equations 1 Electric waves 1 Electromechanical analogies 1 Integral equations 1 Linear operators 1 Mathematical analysis 1 Mathematics 1 Mechanics, Analytic 1 Numerical solutions 1 Plasma (Ionized gases) 1 Research 1 Stability 1 Stratosphere 1