1. Delta crystallins and their nucleic acids
2. 3. R. J. M. Moormann (1984 ) Structure and genetic organization of the rat gamma-crystallin gene family , Thesis , University of Nijmegen.
3. 5. R. M. Clayton, H. Davson, and L. T. Graham (1974 ) inThe eye () pp.399 -494 , Academic Press, London.