B. N. Sumukha R. Chandan Kumar Skanda S. Bharadwaj Koshy George Online peak detection in photoplethysmogram signals using sequential learning algorithm. 1313-1320 2017 IJCNN https://doi.org/10.1109/IJCNN.2017.7966004 conf/ijcnn/2017 db/conf/ijcnn/ijcnn2017.html#SumukhaKBG17