Gaikwad, Apurva, and M.S. Panse. “Extraction of FECG from Non-Invasive AECG Signal for Fetal Heart Rate Calculation”. International Journal of Scientific Research in Network Security and Communication, vol. 5, no. 3, June 2017, pp. 109-12, https://ijsrnsc.org/index.php/j/article/view/88.