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2. 2D. F. Austin(1977 ) The significance of the retraction pocket in the treatment of cholesteatoma.First International Conference on Cholesteatoma, p. 379 . Aesculapius, Birmingham, Alabama.
3. 3D. T. R. Cody, and W. F. Taylor(1977 ) Mastoidectomy for acquired cholesteatoma: Long-term results.First International Conference on Cholesteatoma, p. 337 . Aesculpuis, Birmingham, Alabama.
4. 4M. E. Glasscock(1977 ) Results in cholesteatoma surgery.First International Conference on Cholesteatoma, p. 401 . Aesculpius, Birmingham, Alabama.
5. 5J. Sade(1977 ) Postoperative cholesteatoma recurrence.First International Conference on Cholesteatoma, p. 384 , Aesculapius, Birmingham, Alabama.