@article{EngelBoenischOstermoeller2017,
  author    = {Andreas Engel and Harald B{\"o}nisch and Jennifer Osterm{\"o}ller},
  title     = {Delayed recovery of mid-latitude lower stratospheric halogen loading},
  journal   = {Atmospheric chemistry and physics. Discussions},
  volume    = {17},
  number    = {550},
  doi       = {10.5194/acp-2017-550},
  year      = {2017},
}