1. Masked bilateral superior oblique paresis;Hermann;J Pediatr Ophthalmol Strabismus,1981
2. Surgical management of superior oblique paresis;Souza-Dias,1976
3. Masked bilateral superior oblique palsy: clinical features and diagnosis;Kraft;J Pediatr Ophthalmol Strabismus,1986
4. Superior oblique palsy: diagnosis and treatment;Flanders;Can J Ophthalmol,1990
5. Differential diagnosis of vertical muscle palsies;Scott,1978