1. Chipman, M., Jin, Y.L.: Drowsy drivers: the effect of light and circadian rhythm on crash occurrence. Saf. Sci. 47(10), 1364–1370 (December 2009)
2. N. H. T. S. Administration. (01 May 2016). Research on Drowsy Driving
3. L. Tijerina, M. Gleckler, D. Stoltzfus, S. Johnston, M. J. Goodman, and W. W. Wierwille, “A Preliminary Assessment of Algorithms for Drowsy and Inattentive Driver Detection on the Road,” U.S. Department of Transportation National Highway Traffic Safety AdministrationMarch 1999
4. G. D. Furman and A. Baharav, “Investigation of Drowsiness while Driving: Utilizing Analysis of Heart Rate Fluctuations,” Computing in Cardiology, pp. 1091–1094, 26–29 Sept. 2010
5. Lee, K.M., Lee, S.M., Sim, K.S., Kim, K.K., Park, K.S.: Noise reduction for non-contact electrocardiogram measurement in daily life. Comput. Cardiol. 36, 493–496 (2009)