1. Bowman's lecture: on a few hereditary eye affections. Trans Ophthal Soc UK 1935; 55;Usher, C.H.
2. Retinitis pigmentosa combined with congenital deafness; with vestibulo-cerebellar ataxia and mental abnormality in a proportion of cases. A clinical and genetico-statistical study;Hallgren, B.;Acta Psychiatr Scand,1959
3. Usher syndrome: clinical findings and gene localization studies;Kimberling, W.J.; Moller, C.G.; Davenport, S.L.H.;Laryngoscope,1989
4. Usher syndrome: results of a screening program in Colombia;Tamayo, M.L.; Bernal, J.E.; Tamayo, G.E.;Clin Genet,1991
5. The Usher syndrome type 2A: clinical findings in obligate carriers;van Aarem A; CWRJ, Cremers; AJLG, Pinckers; PLM, Huygen; GCJH, Hombergen; BJ, Kimberling;Int Pediatr Otorhinolaryngol,1995