1. Physical principles of ultrasonic diagnosis;Wells,1969
2. Ultrasonographia medica-proceedings of the First World Congress on Ultrasound in Medicine,1971
3. Ultrasonics in medicine;Lindgren;IEEE Spectrum,1969
4. Recent progress in medical ultrasonics;Smyth;Ultrasonics,1970
5. Current status of ophthalmic ultrasonography;Baum,1965