Vrbancic, G. ., I. J. . Fister, and V. . Podgorelec. “Automatic Detection of Heartbeats in Heart Sound Signals Using Deep Convolutional Neural Networks”. Elektronika Ir Elektrotechnika, vol. 25, no. 3, June 2019, pp. 71-76, doi:10.5755/j01.eie.25.3.23680.