1. Ultrasonic interpretation of orbital disease;Purnell,1969
2. Basics, methods, and results of ultrasonography used in diagnosis of intraorbital tumors;Ossoinig,1969
3. Reliability of ocular and orbital diagnosis with B-scan ultrasound. Part 1: Ocular diagnosis;Coleman;Am. J. Ophth.,1972
4. Acoustic properties of normal human orbit tissues;Buschmann;Ophth. Res.,1970