1. W. W. Nichols, M. F. O'Rourke, and C. Vlachopoulos, McDonald’s Blood Flow in Arteries: Theoretical, Experimental and Clinical Principles (CRC Press, Boca Raton, 2011), pp. 1–12.
2. Introduction
3. R. J. Goldstein, Fluid Mechanics Measurements (CRC Press, Boca Raton, 1996), pp. 2–3.
4. Johann Christian Doppler and his effect—A brief history
5. D. Evans and W. McDicken, Doppler Ultrasound: Physics, Instrumentation and Signal Processing, 2nd ed. (Wiley, Chichester, 2000), pp. 204–207.