Authors: Bette L Otto-Bliesner; Shawn J Marshall; Jonathan T Overpeck; Gifford H Miller; Aixue Hu Journal: Science Date: 2006-03-24 Impact factor: 47.728
Authors: Joachim Elsig; Jochen Schmitt; Daiana Leuenberger; Robert Schneider; Marc Eyer; Markus Leuenberger; Fortunat Joos; Hubertus Fischer; Thomas F Stocker Journal: Nature Date: 2009-09-24 Impact factor: 49.962