1. Rabek, J.F. (1996) Photodegradation of Polymers (Physical Characteristics and Applications), Springer, Berlin.
2. White, J.R. and Turnbull, A. (1994) J. Mat. Sci., 29, 584.
3. Allen, N.S. and Edge, M. (1992) Fundamentals of Polymer Degradation and Stabilisation, Elsevier Applied Science, London.
4. Davis, A. and Sims, D. (1983) Weathering of Polymers, Applied Science, London.
5. Brown, R.P. (1991) Survey of status of test methods for accelerated durability testing, Polymer Testing, 10, 3.