To cite package ‘longsurr’ in publications use:

Parast L, Agniel D, Wang X (2025). longsurr: Longitudinal Surrogate Marker Analysis. R package version 1.1, https://github.com/laylaparast/longsurr.

Corresponding BibTeX entry:

  @Manual{,
    title = {longsurr: Longitudinal Surrogate Marker Analysis},
    author = {Layla Parast and Denis Agniel and Xuan Wang},
    year = {2025},
    note = {R package version 1.1},
    url = {https://github.com/laylaparast/longsurr},
  }