To cite transreg in publications use:

  Armin Rauschenberger, Zied Landoulsi, Mark A. van de Wiel, and Enrico
  Glaab (2023). "Penalised regression with multiple sources of prior
  effects", arXiv (pre-print) https://doi.org/10.48550/arXiv.2212.08581

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Penalised regression with multiple sources of prior effects},
    author = {{Rauschenberger, Armin [aut],Landoulsi, Zied [aut],van de Wiel, Mark A. [aut], Glaab, Enrico [aut]}},
    journal = {aRxiv},
    year = {2023},
    doi = {10.48550/arXiv.2212.08581},
  }