1. HeartPy has 92 citations on Google Scolar: https://scholar.google.com/citations?user=OOhuA6gAAAAJ&hl=de&oi=sra 2. NeuroKit2: A Python toolbox for neurophysiological signal processing has 234 citations on Google Scolar – 859 stars – 266 forks https://github.com/neuropsychology/NeuroKit 3. the paper about the Polar OH1 has 58 citations on Google Scolar: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0217288 4. Dr. Milind Desais paper with 3 lead ECG reference …