B. V. DURGA, S. B. S. LAKSHMI, S. MUSTHAFA, B. KALESH, S. KUMAR. A review of Convolution Neural Network, ECG and STFT Based Spectrogram for Health Applications. International Journal of Advanced Science and Technology, v. 29, n. 04, p. 11197 - 11206, 1 Dec. 2020.