To cite robmed in publications use:

  Alfons A, Ateş NY, Groenen PJF (2022). “Robust Mediation Analysis:
  The R Package robmed.” _Journal of Statistical Software_, *103*(13),
  1-45. doi:10.18637/jss.v103.i13
  <https://doi.org/10.18637/jss.v103.i13>.

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Robust Mediation Analysis: The {R} Package {robmed}},
    author = {Andreas Alfons and N{\"u}fer Y. Ate\c{s} and Patrick J. F. Groenen},
    journal = {Journal of Statistical Software},
    year = {2022},
    volume = {103},
    number = {13},
    pages = {1--45},
    doi = {10.18637/jss.v103.i13},
  }