To cite coalitions in publications use:

Bauer, A., Bender, A., Klima, A. K├╝chenhoff, H., KOALA: A new paradigm for election coverage. AStA Adv Stat Anal (2019). https://doi.org/10.1007/s10182-019-00352-6

Bender et al., (2018). coalitions: Coalition probabilities in multi-party democracies. Journal of Open Source Software, 3(23), 606, https://doi.org/10.21105/joss.00606

Corresponding BibTeX entries:

  @Article{,
    author = {Alexander Bauer and Andreas Bender and Andre Klima and
      Helmut K├╝chenhoff},
    title = {KOALA: A new paradigm for election coverage},
    year = {2019},
    journal = {AStA Adv Stat Anal},
    url = {https://doi.org/10.1007/s10182-019-00352-6},
  }
  @Article{,
    title = {coalitions: Coalition probabilities in multi-party
      democracies},
    author = {Andreas Bender and Alexander Bauer},
    journal = {The Journal of Open Source Software},
    year = {2018},
    month = {mar},
    volume = {3},
    number = {23},
    url = {http://joss.theoj.org/papers/10.21105/joss.00606},
    doi = {10.21105/joss.00606},
  }