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3. Burian-von Noorden's Binocular Vision and Ocular Motility: Theory and Management of Strabismus;von Noorden,1985
4. Strabismus, Heterophoria, Ocular Motor Paralysis: Clinical Ocular Muscle Imbalance;Hugonnier,1969
5. Diagnostic injection of xylocaine into extraocular muscles;Ma goon;Ophthalmology,1982