Sparzinanda, Eif, Sri Oktamuliani, Dian Fitriyani, and Imam Taufiq. “Digital Image Processing for Determining the Speed of Blood Flow in the Heart Based on the Doppler Effect”. JURNAL ILMU FISIKA 15, no. 2 (May 26, 2023): 116–122. Accessed May 10, 2024. http://jif.fmipa.unand.ac.id/index.php/jif/article/view/518.