To cite CRBHits in publications, use:

  Ullrich, Kristian K. CRBHits: from conditional reciprocal best hits
  to codon alignments and Ka/Ks in R. The Journal of Open Source
  Software, 5(55). (2020). https://doi.org/10.21105/joss.02424

A BibTeX entry for LaTeX users is

  @Article{,
    title = {CRBHits: from conditional reciprocal best hits to codon alignments and Ka/Ks in R},
    author = {Kristian K. Ullrich},
    journal = {The Journal of Open Source Software},
    year = {2020},
    volume = {5},
    number = {55},
    url = {https://joss.theoj.org/papers/10.21105/joss.02424},
    doi = {10.21105/joss.02424},
  }