1. Akerstedt, T. and Gillberg, M. (1990). Subjective and objective sleepiness in the active individual. Int. J. Neuroscience, 52, 29–37.
2. Barr, L. C., Yang, C. Y. D., Hanowski, R. J. and Olson, R. (2005). Assessment of driver fatigue, distraction, and performance in a naturalistic setting. J. Transportation Research Board, 1937, 51–60.
3. Chung, T., Kim, J. and Yi, K. (2004). Human-in-the-loop evaluation of a vehicle stability controller using a vehicle simulator. Int. J. Automotive Technology 5,2, 109–114.
4. Dinges, D. F., Mallis, M., Maislin, G. and Powell, J. W. (1998). Evaluation of Techniques for Ocular Measurement as an Index of Fatigue and as the Basis for Alertness Management. National Highway Traffic Safety Administration.
5. Dingus, T. A., Hardee, L. and Wierwille, W. W. (1985). Development of Impaired Driver Detection Measures. Blacksburg. Department of Industrial Engineering and Operations Research. Virginia Polytechnic Institute and State University. VA. USA.