1. F.O. George, Structure of the skin, in: L.A. Goldsmith (Ed.), Physiology, Biochemistry, and Molecular Biology of the Skin, 2nd edn., Vol. 1, Oxford University Press, Oxford, 1991, pp. 3–62.
2. I. Michael, The epidermis, in: W. Montagna, P.F. Parakkal (Eds.), The Structure and Function of Skin, 3rd edn., Academic Press, New York, 1974, pp. 18–74.
3. K.A. Holbrook, Ultrastructure of the epidermis, in: I.M. Leigh, E.B. Lane, F.M. Watt (Eds.), Keratinocyte Handbook, University of Cambridge Press, Cambridge, 1994, pp. 3–39.
4. Evidence that the corneocyte has a chemically bound lipid envelope;Swartzendruber;J. Invest. Dermatol.,1987
5. Presence of intact intercellular lipid lamellae in the upper layers of the stratum corneum;Madison;J. Invest. Dermatol.,1987