To cite package ‘fmcsR’ in publications use:

  Wang Y, Backman TWH, Horan K, Girke T (2013). “fmcsR: mismatch
  tolerant maximum common substructure searching in R.”
  _Bioinformatics_, *29*(21), 2792–2794. ISSN 1367-4811,
  doi:10.1093/bioinformatics/btt475
  <https://doi.org/10.1093/bioinformatics/btt475>,
  <http://dx.doi.org/10.1093/bioinformatics/btt475>.

A BibTeX entry for LaTeX users is

  @Article{Wang_2013,
    title = {fmcsR: mismatch tolerant maximum common substructure searching in R},
    volume = {29},
    issn = {1367-4811},
    url = {http://dx.doi.org/10.1093/bioinformatics/btt475},
    doi = {10.1093/bioinformatics/btt475},
    number = {21},
    journal = {Bioinformatics},
    publisher = {Oxford University Press (OUP)},
    author = {Yan Wang and Tyler W. H. Backman and Kevin Horan and Thomas Girke},
    year = {2013},
    month = {aug},
    pages = {2792–2794},
  }