To cite package ‘NPStability’ in publications use:

  Kumar P, Roy HS, Paul RK, Yeasin M, Yadav SK, Paul AK (2026).
  _NPStability: Rank-Based Stability Index (RSI) for Genotype by
  Environment Studies_. R package version 0.1.0,
  <https://CRAN.R-project.org/package=NPStability>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {NPStability: Rank-Based Stability Index (RSI) for Genotype by Environment
Studies},
    author = {Prakash Kumar and Himadri Sekhar Roy and Ranjit Kumar Paul and Md. Yeasin and Sunil Kumar Yadav and Amrit Kumar Paul},
    year = {2026},
    note = {R package version 0.1.0},
    url = {https://CRAN.R-project.org/package=NPStability},
  }