Snizhko, Y. M., Boiko, O. O., Botsva, N. P., Chernetchenko, D. V., & Milyh, M. M. (2018). Methods for increasing the accuracy of recording the parameters of the cardiovascular system in double-beam photoplethysmography. Regulatory Mechanisms in Biosystems, 9(3), 335-339. https://doi.org/10.15421/021849