Paper  bibtex   

@misc{CalliopeWeb2016,
  author = {Gesche Joost and Franka Futterlieb and Stephan Noller and Jørn Alraun and Klaus Buß and Maxim Loick},
  title = {{Calliope -- Webseite}},
  address = {Berlin},
  date= {2016-10-11},
  url={https://calliope.cc/},
  urldate = {2017-08-13},
}