1. Doppler methods;Fish,1986
2. The pulsed ultrasonic blood-flow detector-factors affecting measured Doppler signal spectrum-width in undisturbed flow;Fish,1990
3. Spectrum analysis - a modern perspective;Kay,1981
4. Non-stationary broadening in pulsed Doppler spectrum measurements;Fish;Ultrasound in Med. Biol.,1991
5. A tutorial overview of modern spectral estimation;Marple,1989