To cite MVT package in publications use:

Osorio F (2023). Estimation and testing for the multivariate t-distribution. R package version 0.3-8, http://mvt.mat.utfsm.cl.

Corresponding BibTeX entry:

  @Manual{,
    title = {Estimation and testing for the multivariate
      t-distribution},
    author = {F. Osorio},
    year = {2023},
    note = {R package version 0.3-8},
    url = {http://mvt.mat.utfsm.cl},
  }