To cite tmap/tmaptools in publications use:

Tennekes M, Puts MJH (2023). “cols4all: a color palette analysis tool.” In EuroVis (Short Papers). doi:10.2312/evs.20231040.

Corresponding BibTeX entry:

  @InProceedings{,
    title = {{cols4all}: a color palette analysis tool},
    author = {Martijn Tennekes and Marco J. H. Puts},
    booktitle = {EuroVis (Short Papers)},
    publisher = {Wiley},
    doi = {10.2312/evs.20231040},
    year = {2023},
  }