1. Micro-photoelectric plethysmography using a rabbit ear chamber;Asano;J. appl. Physiol.,1965
2. A study of the peripheral blood flow in the skin tubed flaps by photoconductive plethysmography;Ben-Hur;Israel J. Med. Sci.,1966
3. Castillo, A., Deulofeut, R., Critz, A., Sola, A., 2011. Prevention of retinopathy of prematurity in preterm infants through changes in clinical practice and SpO2 technology. Acta. Paediatr. 100 (2) 188–192.
4. A photoelectric plethysmograph for the measurement of cutaneous blood flow;Challoner;Phys. Med. Biol.,1974
5. Photoelectric Plethysmography for Estimating Cutaneous Blood Flow;Challoner,1979