1. Hermann Publishers;RA Nicolaus,1964
2. Wall, F. (1972) in M.S. Balsam and E. Sagarin (Eds), Cosmetics: Science and TechnologyVolume 2, 2nd edn. Wiley Interscience., Chichester, U.K.
3. Bil, M. and Corbett, J.F. (1981) Dye., Pigment, 2, 217.
4. Han, S.K., Kamath, Y.K. and Weigman, H.-D. (1985) Diffusion of semi-permanent dyestuffs into human hair. J. Soc. Cosmet. Chem.
36 1.
5. Brown, K. and Corbett, J.F. (1979) J. Soc. Cosmet. Chem.
30, 191.