1. Atkinson, A., and Marsh, G. P., Engineered Barriers: Current Status. Safety Studies NIREX Radioactive Waste Disposal, NSS/G. 102, 1988.
2. Berner, U., Jacobsen, J. and McKinley, I. G., The Near-Field Chemistry of a Swiss L/ILW Repository. OECD Proc. NEA Workshop on Near-Field Assessment of Repositories. Baden, Switzerland, 1987.
3. Birch, L., and Bachofen, R., Complexing agents from microorganisms. Experientia46 (1990) 827–834.
4. Dürre, H. P., Ed., Adaptation on Microorganisms to Extreme Environments. Workshop, Haren, Netherlands, June 1989. FEMS Microbiol. Rev.75 (1990) 102–348.
5. Edwards, C., Ed., Microbiology of Extreme Environments. Open University Press, Milton Keynes 1990.