To cite package ‘polymatching’ in publications use:

Nattino G, Lu B, Song C, Xiang H (2026). polymatching: A Matching Algorithm for Designs with Multiple Groups. R package version 1.0.1, https://github.com/gnattino/polymatching.

Corresponding BibTeX entry:

  @Manual{,
    title = {polymatching: A Matching Algorithm for Designs with
      Multiple Groups},
    author = {Giovanni Nattino and Bo Lu and Chi Song and Henry Xiang},
    year = {2026},
    note = {R package version 1.0.1},
    url = {https://github.com/gnattino/polymatching},
  }