1. (1) M. Okushima, E. Nagano, T. Sasaki, T. Taguchi, and K. Sakakibara: “Research of detecting driver's arousal level”, Trans. of Soc. of Automotive Eng. of Jan., No. 99-04, pp. 11-14 (2004-4) (in Japanese)
2. 奥島美帆·長野英治·佐々木隆·田口敏行·榊原清美:「ドライバの覚醒度検出手法の研究」,自動車技術会学術講演会前刷集,99-04, pp. 11-14 (2004-4)