@article{Gardemann2020,
  author    = {Joachim Gardemann},
  title     = {Mars-"Kan{\"a}le"},
  journal   = {Spektrum der Wissenschaft},
  volume    = {2020},
  pages     = {1 -- 3},
  url       = {https://www.spektrum.de/alias/wunder-des-weltalls/mars-kanaele/1780830},
  year      = {2020},
}