To cite package ‘datafsm’ in publications use:

  Nay JJ, Gilligan JM (2015). “Data-driven dynamic decision models.” In
  Yilmaz L, Chan WKV, Moon I, Roeder TMK, Macal C, Rosetti M (eds.),
  _Proceedings of the 2015 Winter Simulation Conference_, 2752-2763.
  doi:10.1109/WSC.2015.7408381
  <https://doi.org/10.1109/WSC.2015.7408381>.

A BibTeX entry for LaTeX users is

  @InProceedings{,
    title = {Data-driven dynamic decision models},
    author = {John J. Nay and Jonathan M. Gilligan},
    booktitle = {Proceedings of the 2015 Winter Simulation Conference},
    year = {2015},
    editor = {L. Yilmaz and W. K. V. Chan and I. Moon and T. M. K. Roeder and C. Macal and M. Rosetti},
    pages = {2752--2763},
    doi = {10.1109/WSC.2015.7408381},
  }