1. (1) K. Mende: “Future Lighting Design with both LED and Incandescent Lamp”, The Journal of the Institute of Electrical Installation Engineers of Japan, Vol. 36, No. 1, pp. 37-39 (2016)
2. (2) B. Wang, X. Ruan, and K. Yao, et al.: “A Method of Reducing the Peak-to-Average Ratio of LED Current for Electrolytic Capacitor-Less AC-DC Drivers”, IEEE Transactions on Power Electronics, Vol. 25, No. 3, MARCH 2010 (2010)
3. (3) K. Yamamoto and R. L. Kok Kcong: “Device and method for driving LED”, United States Patent, US 7,564,198 (B2) (2009)
4. (4) R. Dayal, K. Modepalli, and L. Parsa: “A Direct AC LED Driver with High Power Factor without the use of Passive Components”, 2012 IEEE Energy Conversion Congress and Exposition (ECCE), pp. 4230-4234 (2012)
5. (5) M. Kato, W. Miyazawa, and Y. Tateno: “LED DRIVER CIRCUIT AND LED DRIVE METHOD”, Japanese patent (B2), No. 5430639 (P5430639), 2013-12-13 (2013)