1. Avitabile T, Uva MG, Fiordalisi F. 1985. I nostri valori ecobiometrici normali per la misurazione dei muscoli retti. I Congr S.I.E.O., Ferrara.
2. McNutt LC. 1975. Ultrasound of Graves’ orbitopathy. (Seminar) Department of Ophthalmology, University of Iowa, Iowa City.
3. McNutt LC, Kaefring SL, Ossoinig KC. 1977. Echographic measurement of extraocular muscles. In: DN White and RE Brown (eds) Ultrasound in Medicine. Vol. 3A, Plenum, New York, pp. 927–932.
4. Ossoinig KC. 1974. Preoperative differential diagnosis of tumours with echography. I Physical principles and morphologic background of tissue echograms. In: FC Blodi (ed) Current Concepts in Ophthalmology. Vol. 4, Mosby, St Louis, pp. 264–280.
5. Ossoinig KC. 1979. Standardized echography: basic principles, clinical applications and results. Int Ophthalm Clinics 19:127–285.