References
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- Adair , H. and Bartley , S. H. 1959 . Comparison of phenomenal distance in photographs of various sizes . J. of Psychol , 47 : 289 – 295 .
- Bartley , S. H. and Thompson , R. 1959 . A further study of horizontal asymmetry in the perception of pictures . Percept. & Mot. Skills , 9 : 135 – 138 .