1. Estimation of mean frequency and variance of ultrasonic doppler signal by using second order autoregressive model;Ahn;IEEE Trans Ultrason Ferroelec Freq Contr,1991
2. AIUM Bioeffects Committee. Bioeffects considerations for the safety of diagnostic ultrasound. J Ultrasound Med 1988;7(9, Supplement).
3. Breast sonography;Bassett;Ultrasound Med Biol,1991
4. Epidermal growth factor in breast cyst fluid;Boccardo;Cancer Res,1988
5. Center for Devices and Radiological Health (CDRH). 510(k) guide for measuring and reporting acoustic output of diagnostic ultrasound medical devices. US Dept of Health and Human Services 1985, Rev. 1993, 1994.