1. Principles of Optics;Hardy,1932
2. Physiological Optics;von Helmholtz,1924
3. The barking lizard;Hirshfeld;Natural History,1971
4. Reptiles of the Pacific World;Loverifdge,1945
5. The electronetiongram of the iguana and Tokay gecko;Mereghini;Vision Res.,1967