1. Technical Pitfalls in Ultrasonic B Scan Examination;Hall;Medical and Biological Engineering,1972
2. American institute of ultrasound in medicine standard 100 millimeter test object including standard procedure for its use (1974). Copies may be obtained from Dr. Ross E. Brown, Department of Radiology, University of Oklahoma Medical Center, 800 N 13th St, Oklahoma City, USA
3. A Sealed Test Tank for Echoscope Performance Evaluation;Carson;J Clin Ultrasound,1973
4. A Method for Checking the Registration of Contact B-Scanners;Hall;J Clin Ultrasound,1975
5. Two-Dimensional Compound Scanning. Effects of Maladjustment and Calibration;Fleming;Ultrasonics,1968