Vakamullu, Venkatesh, and Madhusudhan Mishra. “Variational Mode Decomposition Based Automated Fetal PCG Denoising and Extraction”. International journal of health sciences 6, no. S3 (May 18, 2022): 6567–6579. Accessed June 12, 2026. https://sciencescholar.us/journal/index.php/ijhs/article/view/7469.