1. Hayashi H (1964) Nonlinear oscillations in physical systems. Princeton University Press, Princeton, NJ, Ch. 1
2. Middlebrook RD, Cus S (1976) A general unified approach to modelling switching-converters power stages. In: IEEE power electronics specialist conference record, Cleveland, pp 18–34
3. Sanders SR, Noworolski J, Liu X et al (1991) Generalized averaging method for power conversion circuits. IEEE Trans Power Electron 6(2):251–259
4. Qiu SS, Filanovski MI (1989) Calculation of steady-state oscillations in non-linear circuit. Int J Electron 67(3):403–414
5. Krein PT, Bentsman J, Bass R et al (1990) On the use of averaging for the analysis of power stages. IEEE Power Electron 5(2):182–190