Śmigielski, B.T., M. Chołuj, and G. Cybulski. 2024. “Photoplethysmography in Cardiovascular Disfunction Detection: Signal Processing, Analysis, Implementation. A Review”. Acta Physica Polonica A ISSN 1898-794X 146 (4): 600. https://doi.org/10.12693/APhysPolA.146.600.