1. ?John A C, Damianou D. The wavelength dependence of the photoplethysmogram and its implication to pulse oximetry//14th Annual International Conference of the IEEE Engineering in Medicine and Biology Society.Paris: 1992: 1173-1181.
[2]
2. Webster J G. Design of pulse oximeters. British: Institute of Physics Publishing, 1997: 110-117.
6. Zhao Wenjun. Measurement of pulse oximetry based on dynamic spectroscopy//2013 International Conference on Mechatronic Sciences, Electric Engineering and Computer (MEC), Shenyang: 2013: 1013-1013.