1. KerrisonP.: Diseases of the Ear, p. 292, Fourth Edition. Lippincott Co. Philadelphia, Pa. 1923.
2. PolitzerT.: Diseases of the Ear, p. 550, Sixth Edition. Edited by Ballin, Lea & Febiger Philadelphia, Pa. 1926.
3. Von Hinsberg: Die tymanogen Labyrinthentzündung, s. 439–460. Denker u. Kahler-Julius Springer Berlin, 1926.
4. XC.: Significant Anatomic Features of The Auditory Mechanism with Special Reference to The Late Fetus.