1. Switching function representation of polyphase inverters;Novotny;IEEE Ind. Applic. Society Conf. Rec,1975
2. A general unified approach to modeling switching power converter stages;Middlebrook;IEEE PESC,1976
3. General theory of switching power converters;Wood;IEEE PESC,1979
4. Solid-state power conversion: a Fourier analysis approach to generalized transformer synthesis;Alesina;IEEE Trans. Circuits Syst.,1981
5. Low frequency characterization of PWM converter;Ngo;IEEE Trans. Power Electron,1986