1. Study of the flow patterns in peripheral arteries by ultrasonics;Satomura;J. Accoust. Soc. Japan,1959
2. Pulsed ultrasonic Doppler blood-flow sensing;Baker;I.E.E.E. Trans. Sonics Ultrasonics,1970
3. Directional Doppler demodulation;McLeod,1967
4. Phase rotation for separating forward and reverse blood velocity signals;Nippa;Sonics and Ultrasonics,1975
5. Doppler ultrasonic evaluation of peripheral arterial disease: A programmed audiovisual instruction;Barnes,1976