1. Rockfall control in Washington State;Badger,1992
2. Berger, F., 1997. Interaction forêt de montagne-risques naturels. Détermination de zones d’interventions forestières prioritaires-l’exemple du département de la Savoie, Ph.D. thesis Engref, Paris, 475 p.
3. Berger, F., Quetel, C., Dorren, L.K.A., 2002. Forest: a natural protection mean against rockfalls, but with which efficiency? International Congress Interpraevent 2002 in the Pacific Rim, Conference Proceedings, vol. 2, Matsumoto, Japan, pp. 815–826.
4. The Relascope Idea: Relative Measurements in Forestry. Commonwealth Agricultural Bureaux;Bitterlich,1984
5. Resistance and elasticity: promising concepts for the management of protection forests in the European Alps;Brang;For. Ecol. Manage.,2001