Authors: David C Frank; Jan Esper; Christoph C Raible; Ulf Büntgen; Valerie Trouet; Benjamin Stocker; Fortunat Joos Journal: Nature Date: 2010-01-28 Impact factor: 49.962
Authors: Michael E Mann; Zhihua Zhang; Scott Rutherford; Raymond S Bradley; Malcolm K Hughes; Drew Shindell; Caspar Ammann; Greg Faluvegi; Fenbiao Ni Journal: Science Date: 2009-11-27 Impact factor: 47.728