1. Brandt , E. and Nilsen , T. N. 2002 Experience with Equipment for Large Scale Accelerated Ageing Tests .Proceedings of the 9th International Conference on the Durability of Building Materials and Components, Brisbane 2002 .
2. Predictive techniques and models for durability tests
3. BS 6923 . 1988 Method for calculation of small color differences . London : British Standards Institution .