To cite package ‘frailtyMMpen’ in publications use:

Huang X, Zhou Y (2023). frailtyMMpen: Efficient Algorithm for High-Dimensional Frailty Model. R package version 1.2.1, https://github.com/heilokchow/frailtymmpen.

Corresponding BibTeX entry:

  @Manual{,
    title = {frailtyMMpen: Efficient Algorithm for High-Dimensional
      Frailty Model},
    author = {Xifen Huang and Yunpeng Zhou},
    year = {2023},
    note = {R package version 1.2.1},
    url = {https://github.com/heilokchow/frailtymmpen},
  }