(1) H. Seidel: “A High Power Factor Tuned Class D Converter”, PESC'88, pp. 1038-1042 (1988)
(2) H. Yamana and H. Irie: “Immittance Converter in a Switching Mode Power Converter”, National Convention Record of IEE Japan, No. 817 (1996) (in Japanese)
(3) H. Irie and H. Yamana: “Immittance Converter Suitable for Power Electronics”, IEEJ Trans. IA, Vol. 117, No. 8, pp. 962-969 (1997-8); Electrical Engineering in Japan, 124-2, pp. 53-62 (1998) (in Japanese)