To cite package 'RMassBank' in publications use:

  M. A. Stravs, E. L. Schymanski, H. Singer, J. Hollender, 2013,
  Automatic Recalibration and Processing of Tandem Mass Spectra using
  Formula Annotation, Journal of Mass Spectrometry, 48(1), 89-99.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Automatic Recalibration and Processing of Tandem Mass Spectra using Formula Annotation.},
    author = {Michael A. Stravs and Emma L. Schymanski and Heinz Singer and Juliane Hollender},
    year = {2013},
    journal = {Journal of Mass Spectrometry},
    volume = {48},
    number = {1},
    pages = {188},
  }