Mulyadi, Indra Hardian, et al. “Improving Accuracy of Derived 12-Lead Electrocardiography by Waveform Segmentation”. Indonesian Journal of Electrical Engineering and Informatics (IJEEI), vol. 7, no. 1, Mar. 2019, pp. 15-21, https://doi.org/10.52549/ijeei.v7i1.937.