1. & (2001) Final Report Project no. 5 in the framework of the climatological projects in the application area of ECSN ‘Geographic Information Systems in Climatological Application’, Oslo–Vienna, manuscript.
2. & (1993) Katalog der Grosswetterlagen Europas nach Paul Hess und Helmuth Brezowski 1881–1992, Berichte des Deutschen Wetterdienstes 113.
3. Global 30 Arc-Second Elevation Data Set (GTOPO30), http://edcdaac.usgs.gov/gtopo30/gtopo30.asp.