Yasuhiro Nagai
- 高速道路トンネル内の輝度分布計測. Measurement of luminance distribution in the high way tunnel. In: Journal of the Illuminating Engineering Institute of Japan, v. 79 ( 1995). (1995):
- トンネル走行時の視環境について. Driver's visual environment in highway tunnel. In: Journal of the Illuminating Engineering Institute of Japan, v. 80 ( 1996). (1996):