1. Spectral analysis for non-linear systems. Part I, Parametric non-linear spectral analysis;Billing;Mechanical Systems and Signal Processing,1989
2. The output properties of Volterra systems (non-linear system with memory) driven by harmonic and Grauoscan inputs;Bedrosian,1971
3. Analysis of non-linear systems with multiple inputs;Bussgan,1974
4. Sinusoidal Analysis and Modelling of Weakly Nonlinear Circuits;Wiener,1980
5. Second order transfer function computation and physical interpretation;Vinh,1987