Adnan, Taif Firas, Abdullah Naser Khdaer, Abdullah Khalil Ismail, and Mohammed Mosa Mahmood. “Design of Electronic Stethoscope and Heartbeat Monitor Using Arduino”. American Journal of Botany and Bioengineering 2, no. 3 (March 7, 2025): 71–82. Accessed August 25, 2025. https://biojournals.us/index.php/AJBB/article/view/702.