Yu, Alfred C. H., K. Wayne Johnston, and Richard S. C. Cobbold. “Frequency-Based Signal Processing for Ultrasound Color Flow Imaging”. Canadian Acoustics 35, no. 2 (June 1, 2007): 11–23. Accessed September 26, 2024. https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1874.