To cite package ‘xtrec’ in publications use:

  Alkhalaf M (2026). _xtrec: Panel Unit Root Test Based on Recursive
  Detrending_. R package version 1.0.0,
  <https://github.com/muhammedalkhalaf/xtrec>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {xtrec: Panel Unit Root Test Based on Recursive Detrending},
    author = {Muhammad Alkhalaf},
    year = {2026},
    note = {R package version 1.0.0},
    url = {https://github.com/muhammedalkhalaf/xtrec},
  }