1. Albritton, D., Derwent, R., Isaksen, I., Lal, M., Wuebbles, D., 1996. Trace gas radiative forcing indicies. In: Houghton, J.T., Meira Filho, L.G., Callander, B.A., Harris, N., Kattenberg, A., Maskell, K. (Eds.), Climate Change 1995: The Science of Climate Change (Chapter 2). Cambridge University Press, Cambridge
2. Brandes, L.J., Den Hollander, H., Van de Meent, D., 1996. SimpleBox 2.0: a nested multimedia fate model for evaluating the environmental fate of chemicals. Report no. 719101029, National Institute of Public Health and the Environment, Bilthoven
3. Cleven, R.F.M.J., Janus, J.A., Annema, J.A., Slooff, W., 1993. Integrated criteria document zinc. Report no. 710401028, National Institute of Public Health and Environmental Protection, Bilthoven
4. De Vries, W., Bakker, D.J., 1998. Manual for calculating critical loads of heavy metals for terrestrial ecosystems. Guidelines for critical limits, calculation methods and input data. Report 166, DLO Winand Staring Centre, Wageningen
5. Goldberg, E.D., 1965. Minor elements in sea water. In: Riley, J.P., Skirrow, G. (Eds.), Chemical Oceanography, vol. 1. Academic Press, London, pp. 164–165