To cite `qrcode` in publications please use:

Teh V, Onkelinx T (2021). qrcode: Generate QRcodes with R. Version 0.1.4. doi: 10.5281/zenodo.5040088, https://thierryo.github.io/qrcode/.

Corresponding BibTeX entry:

  @Manual{,
    title = {qrcode: Generate QRcodes with R. Version 0.1.4},
    author = {Victor Teh and Thierry Onkelinx},
    year = {2021},
    url = {https://thierryo.github.io/qrcode/},
    abstract = {Create QRcode in R.},
    doi = {10.5281/zenodo.5040088},
  }