1. D. Christensen, Ultrasonic Bioinstrumentation, New York: Wiley, 1988.
2. K. Ferrara and R. Algazi, “A new wideband spread target maximum likelihood estimator for blood velocity estimation,” IEEE Trans. UFFC, Jan. 1991.
3. P. Fish, “Doppler method,” in Physical Principles of Medical Ultrasonics, C. Hill, Ed., Wiley, 1986, ch. 11.
4. S. Foster, P. Embree and W. O’Brien, Jr., “Volumetric blood flow via time domain correlation,” IEEE Trans. UFFC, pp. 164–175, May 1990.
5. L. Hatle and B. Angelson, Doppler Ultrasound in Cardiology, 1985.