Original paper's citation with the described statistical model.

  Castillo-Aguilar M, Mabe-Castro D, Medina D, Núñez-Espinosa C (2025).
  “Enhancing cardiovascular monitoring: a non-linear model for
  characterizing RR interval fluctuations in exercise and recovery.”
  _Scientific Reports_, *15*(1), 8628. doi:10.1038/s41598-025-93654-6
  <https://doi.org/10.1038/s41598-025-93654-6>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Enhancing cardiovascular monitoring: a non-linear model for characterizing RR interval fluctuations in exercise and recovery},
    author = {Matías Castillo-Aguilar and Diego Mabe-Castro and David Medina and Cristian Núñez-Espinosa},
    journal = {Scientific Reports},
    year = {2025},
    volume = {15},
    number = {1},
    pages = {8628},
    doi = {10.1038/s41598-025-93654-6},
  }

R package's citation with the specific R-R interval modeling tools.

  Castillo-Aguilar M (2025). _CardioCurveR: Nonlinear Modeling of R-R
  Interval Dynamics_. doi:10.32614/CRAN.package.CardioCurveR
  <https://doi.org/10.32614/CRAN.package.CardioCurveR>.
  <https://cran.r-project.org/package=CardioCurveR>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {CardioCurveR: Nonlinear Modeling of R-R Interval Dynamics},
    author = {Matías Castillo-Aguilar},
    year = {2025},
    url = {https://cran.r-project.org/package=CardioCurveR},
    doi = {10.32614/CRAN.package.CardioCurveR},
  }