To cite recmap in publications use:

Panse C (2018). “Rectangular Statistical Cartograms in R: The recmap Package.” Journal of Statistical Software, Code Snippets, 86(1), 1–27. doi: 10.18637/jss.v086.c01.

Heilmann R, Keim D, Panse C, Sips M (2004). “RecMap: Rectangular Map Approximations.” In 10th IEEE Symposium on Information Visualization (InfoVis 2004), 10-12 October 2004, Austin, TX, USA, 33-40. doi: 10.1109/INFVIS.2004.57.

Corresponding BibTeX entries:

  @Article{,
    title = {Rectangular Statistical Cartograms in {R}: The {recmap}
      Package},
    author = {Christian Panse},
    journal = {Journal of Statistical Software, Code Snippets},
    year = {2018},
    volume = {86},
    number = {1},
    pages = {1--27},
    doi = {10.18637/jss.v086.c01},
  }

  @InProceedings{,
    title = {RecMap: Rectangular Map Approximations},
    author = {Roland Heilmann and Daniel Keim and Christian Panse and
      Mike Sips},
    booktitle = {10th {IEEE} Symposium on Information Visualization
      (InfoVis 2004), 10-12 October 2004, Austin, TX, {USA}},
    pages = {33-40},
    month = {October},
    year = {2004},
    doi = {10.1109/INFVIS.2004.57},
  }