@article{BoenischEngelCurtiusetal.2009,
  author    = {Harald B{\"o}nisch and Andreas Engel and Joachim Curtius and Thomas Birner and Peter Hoor},
  title     = {Quantifying transport into the lowermost stratosphere using simultaneous in-situ measurements of SF6 and CO2},
  journal   = {Atmospheric chemistry and physics},
  volume    = {9},
  pages     = {5905 -- 5919},
  doi       = {10.5194/acp-9-5905-2009},
  year      = {2009},
}