To cite package ‘RQK’ in publications use:

  Song D, Joseph VR (2026). “Rational Quadratic Kriging.” arXiv
  preprint arXiv:2610.18077. doi:10.48550/arXiv.2610.18077
  <https://doi.org/10.48550/arXiv.2610.18077>.

A BibTeX entry for LaTeX users is

  @Misc{song2026rational,
    title = {Rational Quadratic Kriging},
    author = {Difan Song and V. Roshan Joseph},
    year = {2026},
    howpublished = {arXiv preprint arXiv:2610.18077},
    doi = {10.48550/arXiv.2610.18077},
  }