1. Retina, choroid and sclera. Cowdry Spec. Cytology V, III;Arey,1932
2. Melanoblasts of the normal human choroid;Wolter;AMA Arch. Ophth.,1955
3. Histological studies on ocular structures of fetuses: Observation on the development of pigmented cells of the choroid and sclera;Yoshihisa;Japanese J. Ophth.,1957
4. Electron microscope observations on the origin, development and genetic variation of melanin granules in the eye;Moyer,1961
5. Electron microscopy of the human choroid;Feeney;Am. J. Ophth.,1961