1. The external Auditory Canal and Pinna;Castillo,2009
2. Cholesteatoma of the external ear canal;Farrior;Am J Otolog.,1990
3. Anatomy of the ear. En: Hearing: anatomy, physiology and disorders of the auditory system;Moller,2006
4. The external ear;Probst,2006
5. Interactive Web-based learning module on CT of the Temporal Bone: anatomy and pathology;Philips;RadioGraphics.,2012