BARATI MOGHADAM, Z., M. SEPEHRI NOGHONDAR, and A. GOSHVARPOUR. “Novel Delayed Poincare’s Plot Indices of Photoplethysmogram for Classification of Physical Activities”. Applied Medical Informatics., Vol. 43, no. 1, Mar. 2021, pp. 43-55, https://ami.info.umfcluj.ro/index.php/AMI/article/view/806.