照明器具-1 中国市場におけるバイクヘッドランプ性能の調査 Yao, Q., Kojima, S., Li, F., Chen, D. and Lin, Y.: An Investigation on Photometric Pattern of Motorcycle Headlamps in Chinese Market [Proceedings of the 2nd Tripartite Lighting Sci-Tech Forum of China, Japan and Republic of Korea, pp.145-148 (2009)]