Summarising changes in air temperature  over Europe by quantile regression and clustering
          Barbosa, Susana M. ; Scotto, Manuel; Alonso, Andrés M.  
          
          Natural Hazards and Earth System Sciences, 11 (2011), 3227-3233  
          http://www.nat-hazards-earth-syst-sci.net/11/3227/2011/nhess-11-3227-2011.html  
           
            
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