1. Elliot P, Wakefield J, Best N, Briggs D.Spatial Epidemiology Methods and Applications. New York: Oxford University Press, 2009
2. Newhouse M. Epidemiology of Asbestos-Related Tumors.Seminars in Oncology1981; 8(3): 250–257
3. Coetzee CB, Brabers AJ, Malherbe SJ, Van Biljon WJ. Asbestos. III Coetzee CB (ed).Mineral resources of South Africa, 5. ed. Pretoria: Geological Survey, 1992
4. Clark RN. Spectroscopy of Rocks and Minerals, and Principles of Spectroscopy. In: Rencz AN (ed).Manual of Remote Sensing, Volume 3, Remote Sensing for the Earth Sciences. New YorkJohn Wiley and Sons, 1999: 3–58
5. Analytical Spectral Devices Inc.ReldSpec 0 Pro: User Guide, Boulder, USA, 2002