Xie F, Zemlin C. Filter Design for Optically Recorded Cardiac Electrical Activity Recorded During Ischemia. IJSBAR [Internet]. 2014 Oct. 25 [cited 2024 Jul. 3];15(2):310-2. Available from: https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/3013