@article{EngelBoenischSchwarzenbergeretal.2016,
  author    = {Andreas Engel and Harald B{\"o}nisch and Tim Schwarzenberger and Hans-Peter Haase and Katja Grunow and Jana Abalichin and Stephan Sala},
  title     = {Long term validation of ESA operational retrieval (version 6.0) of MIPAS Envisat vertical profiles of methane, nitrous oxides, CFC-11 and CFC-12 using balloon borne observations and trajectory matching},
  journal   = {Atmospheric measurement techniques discussions},
  volume    = {9},
  pages     = {7455 -- 7489},
  doi       = {10.5194/amtd-8-7455-2015},
  year      = {2016},
}