In: M.P. Cottam, D.W. Harvey, R.P. Pape, J. Tait (eds); Foresight and Precaution. Proceedings of ESREL 2000, SARS and SRA-Europe Annual Conference; 15-17 May 2000, Edinburgh, Scotland, A.A. Balkema, Rotterdam, Netherlands, pp. 667-672 [2000]