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://joss.theoj.org/papers/10.21105/joss.05082.

Corresponding BibTeX entry:

  @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},
  }