“Analysis of Automatic Classification of Electrocardiogram (ECG) Beats Using Wavelet Transform and SVM and PCA-SVM ”. International Journal of Advance Engineering and Research Development (IJAERD) 4, no. 11 (November 25, 2017): 505–510. Accessed November 2, 2025. https://ijaerd.org/index.php/IJAERD/article/view/4120.