References
- Burian, Hermann M.: Normal and anomalous correspondence. In Strabismus: Ophthalmic Symposium, St. Louis, C. V. Mosby, 1950, pp. 130–145.
- Kramer, Mary Everist: Clinical Orthoptics: Diagnosis and Treatment, St. Louis, C. V. Mosby, 1949.
- Swan, Kenneth C.: The sensory physiology of binocular vision. In Strabismus: Ophthalmic Symposium, St. Louis, C. V. Mosby, 1950, pp. 107–129.