1. Menzies G, Muneer T. Life cycle assessment of multi-glazed window, Nor Dam, Den Hague; 2000.
2. Statistical digest;Ceylon Electricity Board,2003
3. United Nations Environment Program. The South Asian Haze: Air pollution, Ozone and Aerosols. Available at the web site: http://www.unep.org/GC/GC22/Document/Part%201.pdf; June 2004.
4. Illeperuma OA, Premakeerthi RM. Acid rain monitoring in Sri Lanka. In: Proceedings of the CSC/CREN workshop on acid rain monitoring and atmospheric modeling, Kandy, 20–23 April 1998.
5. Frazao R, Fernandes R. Comparative analysis of the life cycle of at fiber-cement and NT fiber-cement, final report, Chrysotile Institute; 2004. Available at the web site: http://www.chrysotile.com/data/26826_EN_INETI.pdf; February 2006.