To cite RCzechia in publications use:

  Lacko J (2023). “RCzechia: Spatial Objects of the Czech Republic.”
  _Journal of Open Source Software_, *8*(83). doi:10.21105/joss.05082
  <https://doi.org/10.21105/joss.05082>,
  <https://joss.theoj.org/papers/10.21105/joss.05082>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {RCzechia: Spatial Objects of the Czech Republic},
    author = {Jindra Lacko},
    journal = {Journal of Open Source Software},
    year = {2023},
    volume = {8},
    number = {83},
    url = {https://joss.theoj.org/papers/10.21105/joss.05082},
    doi = {10.21105/joss.05082},
  }