1. (1) “LIVING WITH ALS, What's It All About ?”, ALS Association, California, USA (1997)
2. (3) N. Kanou, M. Inoue, Y. Kobayashi, T. Kawakami, and K. Inoue : “Detection of Winking by a Neural Network”, Trans. IEE of Japan, Vol. 115-C, No. 3, pp. 367-372 (1995) (in Japanese)