To cite the eClosure package in publications use:

Xu Z, Solari A, Fisher L, de Heide R, Ramdas A, Goeman J (2025). “L1 penalized estimation in the Cox proportional hazards model.” arXiv preprint arXiv:2509.02517.

Corresponding BibTeX entry:

  @Article{,
    title = {L1 penalized estimation in the Cox proportional hazards
      model},
    author = {Ziyu Xu and Aldo Solari and Lasse Fisher and Rianne {de
      Heide} and Aaditya Ramdas and Jelle Goeman},
    journal = {arXiv preprint arXiv:2509.02517},
    year = {2025},
  }