To cite mixdir in publications use:

Ahlmann-Eltze C, Yau C (2018). “MixDir: Scalable Bayesian Clustering for High-Dimensional Categorical Data.” In 2018 IEEE 5th International Conference on Data Science and Advanced Analytics (DSAA), 526–539. doi: 10.1109/DSAA.2018.00068, http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8631438&isnumber=8631391.

Corresponding BibTeX entry:

  @InProceedings{,
    title = {{MixDir}: Scalable Bayesian Clustering for
      High-Dimensional Categorical Data},
    author = {Constantin Ahlmann-Eltze and Christopher Yau},
    booktitle = {2018 IEEE 5th International Conference on Data Science
      and Advanced Analytics (DSAA)},
    year = {2018},
    pages = {526--539},
    doi = {10.1109/DSAA.2018.00068},
    url =
      {http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8631438&isnumber=8631391},
  }