A. A. M. Adam and M. B. M. Amin, “Design and Implementation of Portable PC-Based ECG Machine”, IJSBAR, vol. 15, no. 2, pp. 355–367, Nov. 2014, Accessed: Nov. 25, 2025. [Online]. Available: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/3085