Second International Symposium on Ultrasonic Doppler Methods for Fluid Mechanics and Fluid Engineering Paul Scherrer Institute, Villigen, Switzerland 20. 22. September, 1999 Second International Symposium on Ultrasonic Doppler Methods for Fluid Mechanics and Fluid Engineering (2. ISUD) 20. 22. September, 1999 Paul Scherrer Instimte Villigen, Switzerland SCientific Committee Dr. M.P. Chauve (IRP...