1. Burton, J. L. and Rook, A.: The ages of man and their dermatoes, Textbook of dermatology (Rook, A., Wilkinson, D. S., Ebling, F. J. G. and Chamion, R. H. ED.), IV th Ed., Blackwell Scientific Publications, Oxford, 1986, 265-283.
5. Ogawa, H., Taneda, A. and Sekine, T.: The histochemical distribution of protein bound sulfhydryl groups in human epidermis by the new staining method, J. Histochem. Cytochem., 27: 942-946, 1979.