To cite the MALDIquant package in publications use:

Gibb S, Strimmer K (2012). “MALDIquant: a versatile R package for the analysis of mass spectrometry data.” Bioinformatics, 28(17), 2270–2271. doi:10.1093/bioinformatics/bts447, https://academic.oup.com/bioinformatics/article-pdf/28/17/2270/682111/bts447.pdf, https://academic.oup.com/bioinformatics/article-abstract/28/17/2270/246552.

Corresponding BibTeX entry:

  @Article{MALDIquant,
    title = {{MALDI}quant: a versatile {R} package for the analysis of
      mass spectrometry data},
    author = {Sebastian Gibb and Korbinian Strimmer},
    volume = {28},
    number = {17},
    pages = {2270--2271},
    year = {2012},
    doi = {10.1093/bioinformatics/bts447},
    url =
      {https://academic.oup.com/bioinformatics/article-abstract/28/17/2270/246552},
    eprint =
      {https://academic.oup.com/bioinformatics/article-pdf/28/17/2270/682111/bts447.pdf},
    journal = {Bioinformatics},
    publisher = {Oxford University Press},
  }