Reference
- Johansen H. Relation of audiograms to the impedance formula. Acta oto-laryng. 1948; 74: 65, Suppl.
- Rüedi L., Spoendlin H. Histology of the otosclerotic ankylosis of the stapes. Advances in Oto-Rhino-Laryngology, L Rüedi. S. Karger, New York 1957; 4
- Shambaugh G. E., Jr. Surgery of the ear. W. B. Saunders, Philadelphia. 1959
- Wever E. G., Lawrence M. Physiological Acoustics. Princeton Univ. Press, Princeton. 1954