Khalid, Ghaidaa Abdulrahman. “The Effect of Doppler Phenomenon on the Speed of Blood Flow”. Al-Khwarizmi Engineering Journal 8, no. 4 (December 31, 2012): 26–39. Accessed January 9, 2026. https://www.alkej.uobaghdad.edu.iq/index.php/alkej/article/view/145.