The migration of geese as an indicator of climate change in the southern Hudson Bay region between 1715 and 1851 doi:10.1007/BF02423429
Historical evidence and climatic implications of a shift in the boreal forest tundra transition in central Canada doi:10.1007/BF00139750
Peter Thejll und Knud Lassen: Solar forcing of the Northern hemisphere land air temperature: New data. In: Journal of Atmospheric and Solar-Terrestrial Physics. September 2000, doi:10.1016/S1364-6826(00)00104-8.
Ben Goldacre und David Adam: Climate scientist ‘duped to deny global warming’. In: The Observer. 11. März 2007, zitiert von The Guardian (theguardian.com, abgerufen am 2. April 2007).
web.archive.org
Life Style Extra: “Global Warming Is Lies” Claims Documentary (Memento vom 18. August 2007 im Internet Archive) Zitat im englischen Original: “It is essentially a polemic and we are expecting it to cause trouble, but this is the controversial programming that Channel 4 is renowned for.”