H. Hu

Solution of a Duffing-harmonic oscillator by the method of harmonic balance

Solution of a quadratic nonlinear oscillator by the method of harmonic balance

Comparison of two Lindstedt–Poincaré-type perturbation methods

Solution of a mixed parity nonlinear oscillator: Harmonic balance

Solutions of the Duffing-harmonic oscillator by an iteration procedure

A classical iteration procedure valid for certain strongly nonlinear oscillators

Solutions of nonlinear oscillators with fractional powers by an iteration procedure

Solutions of a quadratic nonlinear oscillator: Iteration procedure

Exact solution of a quadratic nonlinear oscillator

A convolution integral method for certain strongly nonlinear oscillators