To cite rpmodel in publications use:

Stocker B, Wang H, Smith N, Harrison S, Keenan T, Sandoval D, Davis T, Prentice C (2019). “P-model v1.0: An optimality-based light use efficiency model for simulating ecosystem gross primary production.” Geoscientific Model Development Discussions, 2019, 1–59. doi: 10.5194/gmd-2019-200, https://www.geosci-model-dev-discuss.net/gmd-2019-200/.

Corresponding BibTeX entry:

  @Article{,
    title = {P-model v1.0: An optimality-based light use efficiency
      model for simulating ecosystem gross primary production},
    author = {Benjamin Stocker and Han Wang and Nicholas Smith and
      Sandy Harrison and Trevor Keenan and David Sandoval and Tyler
      Davis and Colin Prentice},
    journal = {Geoscientific Model Development Discussions},
    year = {2019},
    volume = {2019},
    pages = {1--59},
    url = {https://www.geosci-model-dev-discuss.net/gmd-2019-200/},
    doi = {10.5194/gmd-2019-200},
  }