To cite package ‘flatxml’ in publications use:

Zuckarelli J (2020). flatxml: Tools for Working with XML Files as R Dataframes. R package version 0.1.1, https://github.com/jsugarelli/flatxml.

Corresponding BibTeX entry:

  @Manual{,
    title = {flatxml: Tools for Working with XML Files as R
      Dataframes},
    author = {Joachim Zuckarelli},
    year = {2020},
    note = {R package version 0.1.1},
    url = {https://github.com/jsugarelli/flatxml},
  }