To cite pep725 in publications use:

Templ M, Templ B (2026). “Enhancing Reproducibility in Phenology Research: The pep725 R Package for Quality-Aware Analysis of PEP725 Data.” New Phytologist. doi:10.1111/nph.70869.

For the underlying PEP725 database, also cite:

Templ B, Koch E, Bolmgren K, Markus U, Paul A, Scheifinger H, Rutishauser T, Busto M, Chmielewski F, Lenka H, Sabina H, Kaspar F, Pietragalla B, Romero-Fresneda R, Tolvanen A, Vi\u{0161}nja V, Zimmermann K, Zust A (2018). “Pan European Phenological database (PEP725): a single point of access for European data.” International Journal of Biometeorology, 62, 1109–1113. \Sexpr[results=rd]{tools:::Rd_expr_doi("10.1007/s00484-018-1512-8")}.

Corresponding BibTeX entries:

  @Article{,
    title = {Enhancing Reproducibility in Phenology Research: The
      {pep725} {R} Package for Quality-Aware Analysis of {PEP725}
      Data},
    author = {Matthias Templ and Barbara Templ},
    journal = {New Phytologist},
    year = {2026},
    doi = {10.1111/nph.70869},
  }

  @Article{,
    title = {Pan {European} Phenological database ({PEP725}): a single
      point of access for {European} data},
    author = {Barbara Templ and Elisabeth Koch and Kjell Bolmgren and
      Ungersb\u{00f6}ck Markus and Anita Paul and Helfried Scheifinger
      and This Rutishauser and Montserrat Busto and Frank-M.
      Chmielewski and H\u{00e1}jkov\u{00e1} Lenka and
      Hod\u{017e}i\u{0107} Sabina and Frank Kaspar and Barbara
      Pietragalla and Ramiro Romero-Fresneda and Anne Tolvanen and
      Vu\u{010d}eti\u{0107} Vi\u{0161}nja and Kirsten Zimmermann and
      Ana Zust},
    journal = {International Journal of Biometeorology},
    year = {2018},
    volume = {62},
    pages = {1109--1113},
    doi = {10.1007/s00484-018-1512-8},
  }