Bramanti, M Analysis of a PLL system as analog processor in CW Doppler flowmeters. [electronic resource] - IEEE transactions on bio-medical engineering Sep 1983 - 584-9 p. digital Publication Type: Journal Article ISSN: 0018-9294 Standard No.: 10.1109/tbme.1983.325055 doi Subjects--Topical Terms: Blood Flow VelocityRheologyUltrasonography