@misc{WolferKoplenigMichaelisetal.2020,
  author    = {Sascha Wolfer and Alexander Koplenig and Frank Michaelis and Carolin M{\"u}ller-Spitzer},
  title     = {cOWIDplus Viewer},
  url       = {https://www.owid.de/plus/cowidplusviewer2020/},
  year      = {2020}
}