To cite the 'lefko3' package in publications use:

Shefferson RP, Kurokawa S, Ehrlen J, Davison R (2022). lefko3: Historical and Ahistorical Population Projection Matrix Analysis. R package version 5.4.2.

Shefferson R, Kurokawa S, Ehrlen J (2021). “lefko3: analyzing individual history through size-classified matrix population models.” Methods in Ecology and Evolution, 12(2), 378-382. doi:10.1111/2041-210X.13526, https://doi.org/10.1111/2041-210X.13526.

Corresponding BibTeX entries:

  @Manual{,
    title = {lefko3: Historical and Ahistorical Population Projection
      Matrix Analysis},
    author = {Richard P. Shefferson and Shun Kurokawa and Johan Ehrlen
      and Raziel Davison},
    year = {2022},
    note = {R package version 5.4.2},
  }

  @Article{,
    title = {lefko3: analyzing individual history through
      size-classified matrix population models},
    author = {R.P. Shefferson and S. Kurokawa and J. Ehrlen},
    journal = {Methods in Ecology and Evolution},
    address = {Cambridge},
    year = {2021},
    volume = {12},
    number = {2},
    pages = {378-382},
    doi = {10.1111/2041-210X.13526},
    url = {https://doi.org/10.1111/2041-210X.13526},
  }