1. J. M. McKeller, Radiation Res. Rev. 3 (1971) 141.
2. Color Index (3rd edition) (Society Dyers and Colorists, Bradford, 1970).
3. E. R. Trotman, ?Dyeing and chemical technology of textile fibers? (4th edn) (Griffin, London, 1970).
4. N. S. Allen, P. Bentley and J. F. McKeller, J. Photochem. 5 (1976) 225.
5. N. S. Allen and J. F. McKeller, ibid., 5 (1976) 317.