References
- Dimmick , F. L. 1948 . Boring, Langfeld, and Weld , New York : Wiley, Foundations of Psychology .
- Grant , V. W. 1942 . Accommodation and convergence in visual space perception . J. Exp. Psychol , 31 : 89 – 104 .
- Ittelson , W. H. and Ames , A. Jr. 1950 . Accommodation, convergence, and their relation to apparent distance . J. of Psychol , 30 : 43 – 62 .