1. The metaplastic and congenital origin of cholesteatoma;Sadé;Acta Otolaryngol,1983
2. 2 cases of traumatic cholesteatoma of middle ear;Schroer;Z Laryngol Rhinol Otol,1958
3. Perforation of Shrapnell’s membrane and occlusion of the tubes: an aetiological study;Bezold;Arch Otolaryngol,1890
4. Atelectasis, retraction pockets and cholesteatoma;Sadé;Acta Otolaryngol,1981
5. Pathogenesis of attic cholesteatoma: clinical and immunohistochemical support for combination of retraction theory and proliferation theory;Sudhoff;Am J Otol,2000