Kanjilal, Partha. P.; Bandyopadhyay, Sharba and Bhattacharya, Joydeep. 2006. On analysis of the periodicity attributes of the photo-plethysmograph signal to assess the cardiovascular state. In: Ali Minai and Yaneer Bar-Yam, eds. Unifying Themes in Complex Systems. MA, USA: Springer, pp. 233-240. ISBN 3-540-35864-1 [Book Section]