1. Lecture Notes in Computer Science;W. IJsselsteijn,2006
2. Zhao, L., Reisman, S., Findley, T.: Respiration derived from the electrocardiogram during heart rate variability studies; Engineering in Medicine and Biology Society, Engineering Advances: New Opportunities for Biomedical Engineers. In: Proceedings of the 16th Annual International Conference of the IEEE, vol. 1, pp. 123–124 (November 3-6, 1994)
3. Caggiano, D., Reisman, S.: RESPIRATION, DERIVED, FROM: THE ELECTROCARDIOGRAM: A QUANTITATIVE COMPARISON OF THREE DIFFERENT METHODS; Bioengineering Conference. In: Proceedings of the 1996 IEEE Twenty-Second Annual Northeast, pp. 103–104 (March 14-15, 1996)
4. Scharf, J.E., Athan, S., Cain, D.: Pulse oximetry through spectral analysis; Biomedical Engineering Conference. In: Proceedings of the Twelfth Southern, pp. 227–229 (April 2-4, 1993)
5. Drinnan, M.J., Allen, J., Murray, A.: Relation between heart rate and pulse transit time during paced respiration. Physiol. Meas. 22, 425–432 (2001)