To cite genthat in publications use:

  Filip Křikava and Jan Vitek (2018). Tests from Traces: Automated Unit
  Test Extraction for R. In Proceedings of the 27th ACM SIGSOFT
  International Symposium on Software Testing and Analysis (ISSTA
  2018), pp. 232-241. ACM, New York, NY, USA.
  doi:10.1145/3213846.3213863.

A BibTeX entry for LaTeX users is

  @InProceedings{,
    title = {Tests from Traces: Automated Unit Test Extraction for {R}},
    author = {Filip Křikava and Jan Vitek},
    booktitle = {Proceedings of the 27th ACM SIGSOFT International Symposium on Software Testing and Analysis (ISSTA 2018)},
    year = {2018},
    pages = {232--241},
    publisher = {ACM},
    address = {New York, NY, USA},
    doi = {10.1145/3213846.3213863},
    url = {https://doi.org/10.1145/3213846.3213863},
  }