Einstein, H.H., and Karam, K. (2001). Risk assessment and uncertainties. Keynote lecture. In: Proceedings of the International Conference on Landslides: Causes, Impacts, and Countermeasures (M. Kühne, ed.), 17-21 June 2001, Davos, Switzerland, pp. 457-488 . Balkema, Rotterdam. ISBN 978-3773959690