References
- Chavasse , F. B. 1939 . Worth's Squint, , Ed. 7 , Philadelphia : Blakiston .
- Peter , L. C. 1941 . Extra-Ocular Muscles, , Ed. 3 , Philadelphia : Lea & Febiger .
- Strongin , E. I. , Bull , N. and Korchin , B. 1941 . Visual efficiency during experimentally induced emotional states . J. of Psychol , 12 : 3 – 6 .