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2. Untersuchungen über die Entstehung der Kurzsichtigkeit;Stilling,1887
3. Bemerkungen zu einen Falle on Retraction des Auges;Türk;Zentralbl. Pract. Augenheilkd,1899
4. Binocular vision and ocular motility. Theory and management of strabismus;Von Noorden,2002
5. Congenital deficiency of abduction associated with impairement of adduction, retraction movements, contraction of the palpebral fissure and oblique movements of the eye;Duane;Arch. Ophthalmol.,1905