 to cite tongfen:</p>
<p>von Bergmann, J. (2024). tongfen: R package to Make Data Based on Different Geographies Comparable. v0.3.6. DOI: 10.32614/CRAN.package.tongfen</p>
<p>A BibTeX entry for LaTeX users is</p>
<pre><code>  @Manual{tongfen,
    author = {Jens {von Bergmann}},
    title = {tongfen: R package to Make Data Based on Different Geographies Comparable},
    year = {2024},
    doi = {10.32614/CRAN.package.tongfen},
    note = {R package version 0.3.6},
    url = {https://mountainmath.github.io/to