To cite package ‘pmd’ in publications use:

  Yu M, Olkowicz M, Pawliszyn J (2019). “Structure/reaction directed
  analysis for LC-MS based untargeted analysis.” _Analytica Chimica
  Acta_, *1050*, 16-24. doi:10.1016/j.aca.2018.10.062
  <https://doi.org/10.1016/j.aca.2018.10.062>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Structure/reaction directed analysis for LC-MS based untargeted analysis},
    author = {Miao Yu and Mariola Olkowicz and Janusz Pawliszyn},
    journal = {Analytica Chimica Acta},
    year = {2019},
    volume = {1050},
    pages = {16-24},
    doi = {10.1016/j.aca.2018.10.062},
  }

  Yu M, Petrick L (2020). “Untargeted high-resolution paired mass
  distance data mining for retrieving general chemical relationships.”
  _Communications Chemistry_, *3*, 157. doi:10.1038/s42004-020-00403-z
  <https://doi.org/10.1038/s42004-020-00403-z>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Untargeted high-resolution paired mass distance data mining for retrieving general chemical relationships},
    author = {Miao Yu and Lauren Petrick},
    journal = {Communications Chemistry},
    year = {2020},
    volume = {3},
    pages = {157},
    doi = {10.1038/s42004-020-00403-z},
  }