Causes and Consequences of Past and Projected Scandinavian Summer Temperatures, 500-2100 AD. - Büntgen, Ulf; Raible, Christoph C.; Frank, David; Helama, Samuli; Cunningham, Laura; Hofer, Dominik; Nievergelt, Daniel; Verstege, Anne; Timonen, Mauri; Stenseth, Nils Chr.; Esper, Jan (PLoS ONE, 2011)