To cite the Cardinal package in publications use:

  Bemis, K. A., Foell, M. C., Guo D., Lakkimsetty, S. S., and Vitek, O.
  Cardinal v.3: a versatile open-source software for mass spectrometry
  imaging analysis. Nature Methods 20, 1883-1886 (2023).
  doi:10.1038/s41592-023-02070-z

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Cardinal v.3: a versatile open-source software for mass spectrometry imaging analysis},
    author = {Kyle Ariel Bemis and Melanie Christine Foell and Dan Guo and Sai Srikanth Lakkimsetty and Olga Vitek},
    journal = {Nature Methods},
    number = {20},
    pages = {1883-1886},
    year = {2023},
    doi = {10.1038/s41592-023-02070-z},
  }