To cite SlaPMEG in publications use:

  Ebrahimpoor M, Spitali P, Goeman, J, Tsonaka R (2021). _Pathway
  testing for longitudinal metabolomics_.
  <https://onlinelibrary.wiley.com/doi/full/10.1002/sim.8957>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {Pathway testing for longitudinal metabolomics},
    author = {Mitra Ebrahimpoor and Pietro Spitali and Jelle Goeman, and Roula Tsonaka},
    journal = {Statistics in Medicine},
    year = {2021},
    url = {https://onlinelibrary.wiley.com/doi/full/10.1002/sim.8957},
  }