To cite package ‘discfrail’ in publications use:

Gasperoni F, Jackson C (2019). discfrail: Cox Models for Time-to-Event Data with Nonparametric Discrete Group-Specific Frailties. R package version 0.1, https://github.com/fgaspe04/discfrail.

Corresponding BibTeX entry:

  @Manual{,
    title = {discfrail: Cox Models for Time-to-Event Data with
      Nonparametric Discrete Group-Specific Frailties},
    author = {Francesca Gasperoni and Christopher Jackson},
    year = {2019},
    note = {R package version 0.1},
    url = {https://github.com/fgaspe04/discfrail},
  }