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@ARTICLE{Helten:43702,
      author       = {Helten, M. and Smit, H. G. J.},
      title        = {{A}n instrument for the measurement of atmospheric {CO}2
                      concentration in the free troposphere (0-13 km altitude)},
      journal      = {Geophysical research abstracts},
      volume       = {5},
      issn         = {1029-7006},
      address      = {Katlenburg-Lindau},
      publisher    = {Soc.},
      reportid     = {PreJuSER-43702},
      pages        = {09569},
      year         = {2003},
      note         = {Record converted from VDB: 12.11.2012},
      cin          = {ICG-II},
      ddc          = {550},
      cid          = {I:(DE-Juel1)VDB48},
      pnm          = {Chemie und Dynamik der Geo-Biosphäre},
      pid          = {G:(DE-Juel1)FUEK257},
      typ          = {PUB:(DE-HGF)16},
      url          = {https://juser.fz-juelich.de/record/43702},
}