To cite package ‘mem’ in publications use:

  Lozano J (2023). _mem: The Moving Epidemic Method_. R package version
  2.18, <https://github.com/lozalojo/mem>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {mem: The Moving Epidemic Method},
    author = {Jose E. Lozano},
    year = {2023},
    note = {R package version 2.18},
    url = {https://github.com/lozalojo/mem},
  }