1. Abegg, B., Froesch, R., 1994: Climate change and Winter tourism: impact on transport companies in the Swiss Canton of Graubünden. In: Beniston, M. (ed.)Mountain Environments in Changing Climates. London, New York: Routledge, 328?340.
2. Balling, R. C., 1992:The Heated Debate: Greenhouse Predictions Versus Climate Reality. San Francisco: Pacific Research Institute Press, 195 pp.
3. Bantle, H., 1989: Programmdokumentation Klima-Datenbank am RZ-ETH Zurich. Swiss Meteorological Institute, Zurich.
4. Baeriswyl, P.-A., Rebetez, M., 1995: Répartition spatiale des modifications climatiques dans le domaine alpin. Swiss National Science Foundation, Intermediate Report, Project Nr. 31-038271.
5. Barry, R. G., 1992:Mountain Weather and Climate 2nd edn. London: Routledge.