Sumarna, Sumarna, Agus Purwanto, and Dyah Kurniawati Agustika. 2016. “FREQUENCY COMPONENT EXTRACTION OF HEARTBEAT CUES WITH SHORT TIME FOURIER TRANSFORM (STFT)”. Jurnal Sains Dasar 5 (1):1-6. https://doi.org/10.21831/jsd.v5i1.12658.