@article{HerzschuhNiBirksetal.2011,
  author    = {Ulrike Herzschuh and Jian Ni and H. John B. Birks and J{\"u}rgen B{\"o}hner},
  title     = {Driving forces of mid-Holocene vegetation shifts on the upper Tibetan Plateau, with emphasis on changes in atmospheric CO2 concentrations},
  journal   = {Quaternary science reviews : the international multidisciplinary research and review journal},
  volume    = {30},
  number    = {15-16},
  pages     = {1907 -- 1917},
  doi       = {10.1016/j.quascirev.2011.03.007},
  year      = {2011},
}