1. R.M Barrer. (1951 ) Diffusion in and through solids ., 1st edn , p. 18 . Cambridge University Press, Cambridge. Daynes, H. (1920) The process of diffusion through a rubber membrane. Proceedings of the Royal Society, A97 , 18 .
2. The percutaneous penetration of nandrolone decanoate*
3. J.R Wolbwrg. (1967 ) Prediction Analysis , 1st edn , p. 27 . Van Nostrand, New York.