1. Ocular Vertical Deviations;ANDERSON, J.;RINGLAND,1947
2. BIELSCHOWSKY, A. (1935). Arch. Ophthal. (Chicago), 13, 33.
3. Trait6 des sections tendineuses et musculaires;BONNET, R.;Arch. Ophthal. (Chicago); Ophthalmic Symposium,1841
4. Surgery of the Oblique Muscles of the Eye;FmNK, W.H.,1951
5. Graefe-Saemisch Handbuch des Gesamten Augenheilkunde;GRAEFE, A.;VON,1899