Please acknowledge your use of Quartet and cite the relevant algorithm. For example, 'Quartet divergence (Smith 2019a) was calculated using the tqDist algorithm (Sand et al. 2014) implemented in the R package Quartet v 1.4.0 (Smith 2019b).' If using triplet distances, cite the CPDT algorithm (Jansson & Rajaby 2017) instead.

Smith, MR (2019a). Quartet: comparison of phylogenetic trees using quartet and split measures. R package version 1.4.0.<doi:10.5281/zenodo.2536318>

Sand et al. (2014). tqDist: a library for computing the quartet and triplet distances between binary or general trees. Bioinformatics 30(14): 2079-2080.<doi:10.1093/bioinformatics/btu157>

Jansson & Rajaby (2017). A more practical algorithm for the rooted triplet distance. Journal of Computational Biology 24(2): 106-126.<doi:10.1089/cmb.2016.0185>

Smith, MR (2019b). Bayesian and parsimony approaches reconstruct informative trees from simulated morphological datasets. Biology Letters 15:20180632.<doi:10.1098/rsbl.2018.0632>

Corresponding BibTeX entries:

  @Manual{Quartet,
    title = {Quartet: comparison of phylogenetic trees using quartet
      and split measures},
    author = {Martin R. Smith},
    note = {R package version 1.4.0},
    year = {2019},
    doi = {10.5281/zenodo.2536318},
  }

  @Article{Sand2014,
    author = {Andreas Sand and Morten K. Holt and Jens Johansen and
      Gerth S. Brodal and Thomas Mailund and Christian N. S. Pedersen},
    doi = {10.1093/bioinformatics/btu157},
    journal = {Bioinformatics},
    number = {14},
    pages = {2079--2080},
    title = {tqDist: a library for computing the quartet and triplet
      distances between binary or general trees},
    volume = {30},
    year = {2014},
  }

  @Article{Jansson2017,
    author = {Jesper Jansson and Ramesh Rajaby},
    doi = {10.1089/cmb.2016.0185},
    journal = {Journal of Computational Biology},
    number = {2},
    pages = {106--126},
    title = {A more practical algorithm for the rooted triplet
      distance},
    volume = {24},
    year = {2017},
  }

  @Article{Smith2019,
    author = {Martin R. Smith},
    doi = {10.1098/rsbl.2018.0632},
    journal = {Biology Letters},
    title = {Bayesian and parsimony approaches reconstruct informative
      trees from simulated morphological datasets},
    volume = {15},
    number = {2},
    pages = {20180632},
    year = {2019},
  }