To cite package ‘simplerspec’ in publications use:

  Baumann P (2023). _simplerspec: Soil and plant spectroscopic model
  building and prediction_. R package version 0.2.1,
  <https://github.com/philipp-baumann/simplerspec>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {simplerspec: Soil and plant spectroscopic model building and prediction},
    author = {Philipp Baumann},
    year = {2023},
    note = {R package version 0.2.1},
    url = {https://github.com/philipp-baumann/simplerspec},
  }