Rahmstorf, Stefan Potsdam Institute for Climate Impact Research;
http://www.scilogs.de/klimalounge/das-globale-temperatur-puzzle/ (Publisher version)
Rahmstorf, S. (2013): Das globale Temperatur-Puzzle, (Das globale Temperatur-Puzzle)(Climate science weblog KlimaLounge), Heidelberg : Spektrum der Wissenschaft.