phe" (PDF). Biophysics. 46 (6).Kenneth, James P. (2003-02-14). Methane Hydrates in Quaternary Climate Change: The Clathrate Gun Hypothesis. American Geophysical Union. 2011-06-06 දින මුල් පිටපත වෙතින් සංරක්ෂණය කරන ලදී. සම්ප්‍රවේශය 2009-04-11. {{cite book}}: Check date values in: |year= (help); Unknown parameter |coauthors= ignored (|author= suggested) (help)Keppler, Frank (2006-01-18). "Global Warming - The Blame Is not with the Plants". Max Planck Society. {{cite news}}: Check date values in: |date= (help); Unknown parameter |coauthors= ignored (|author= suggested) (help)Lean, Judith L. (2002–12). "The effect of increasing solar activity on the Sun's total and open magnetic flux during multiple cycles: Implications for solar forcing of climate" (abstract). Geophysical Research Letters. 29 (24): 2224. doi:10.1029/2002GL015880. {{cite journal}}: Check date values in: |year= (help); Unknown parameter |coauthors= ignored (|author= suggested) (help)Lerner, K. Lee (2006-07-26). Environm