1. The structure and formation of pigment granules in human hair;Birbeck;Exp. Cell Res,1956
2. The electron microscopy of human melanocytes and melanin granules;Barnicot,1958
3. An electron microscopic study of the fine structure and formation of red pigment granules in hair follicles;Parakkal;J. Invest. Derm,1963
4. The fine structure of melanocytes in the hair follicles of the guinea pig;Parakkal,1967
5. Ultrastructure of hair pigment;Mottaz,1969