1. Transmission of the ocular media;Boettner;Invest. Ophthal.,1962
2. The yellow colour of the lens of man and other primates;Cooper;J. Physiol. Lond.,1969
3. The scotopic visibility function;Crawford,1949
4. Changes in the shape of the human lens with age;Fisher,1971
5. Untersuchungenüber Dicke und Lage der Linse, etc.;Raeder;V. Graefes Arch. Ophthal.,1922