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2. Badré, M., Prime, J., & Ribière, G. (2009). Neige de culture: Etat des lieux et impacts environnementaux. Note socio-économique. République Française. Ministère de l′Ecologie, de l′Energie, du Développement durable et de l′Améngement du territoire 〈http://www.mountainwilderness.fr/IMG/pdf/rapport_neige-de-culture_2009.pdf〉.
3. Variations of snow depth and duration in the swiss alps over the last 50 years: Links to changes in large-scale climatic forcings;Beniston;Climatic Change,1997
4. Mountain weather and climate: A general overview and a focus on climatic change in the alps;Beniston;Hydrobiologia,2006
5. Effect of trail design and grooming on the incidence of injuries at alpine ski areas;Bergstrom;British Journal of Sports Medicine,2004