To cite package ‘YPmodelPhreg’ in publications use:

Pak D, Yang S (2023). YPmodelPhreg: The Short-Term and Long-Term Hazard Ratio Model with Proportional Adjustment. R package version 1.0.0, https://CRAN.R-project.org/package=YPmodelPhreg.

Corresponding BibTeX entry:

  @Manual{,
    title = {YPmodelPhreg: The Short-Term and Long-Term Hazard Ratio
      Model with Proportional Adjustment},
    author = {Daewoo Pak and Song Yang},
    year = {2023},
    note = {R package version 1.0.0},
    url = {https://CRAN.R-project.org/package=YPmodelPhreg},
  }