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title = {{Tectonic forcing of late Cenozoic climate}},  journal = {Nature},  }  @article{Berner_2003,  doi = {10.1038/nature02131},  url = {http://dx.doi.org/10.1038/nature02131},  year = {2003},  month = {nov},  publisher = {Nature Publishing Group},  volume = {426},  number = {6964},  pages = {323--326},  author = {Robert A. Berner},  title = {{The long-term carbon cycle fossil fuels and atmospheric composition}},  journal = {Nature},  }