1. Chaffey, C.M. and C. Bowie, 1994, Radon and health: an update, Journal of Public Health Medicine, vol. 16, no. 4, 465–470.
2. Environmental Protection Agency (EPA), 40 CFR 192, Health and Environmental Protection Standards for Uranium and Thorium Mill Tailings.
3. Ho, C.K., B.W. Arnold, J.R. Cochran, and R.Y. Taira, 2002, Development of a Risk-Based Probabilistic Performance-Assessment Method for Long-Term Cover Systems – 2nd Edition, SAND2002–3131, Sandia National Laboratories, Albuquerque, NM.
4. Hsuan, Y.G. and R.M. Koerner, 1998, Antioxidant depletion lifetime in high density polyethylene geomembranes, Journal of Geotechnical and Geoenvironmental Engineering, vol. 124, no. 6, pp. 532–541.
5. Koerner, R.M., Y. Halse-Hsuan, and A.E. Lord, 1991, Long-term durability of geomembranes, Civil Engineering, April, 1991, pp. 56–58.