To cite the mvnfast package in publications use:

Matteo Fasiolo. An introduction to mvnfast (2014). R package version 0.1.2.

As mvnfast is often updated, you may want to cite its version number. Find it with 'help(package=mvnfast)'.

Corresponding BibTeX entry:

  @Manual{,
    title = {An introduction to mvnfast. R package version 0.1.2.},
    author = {Matteo Fasiolo},
    year = {2014},
    url =
      {http://cran.r-project.org/web/packages/mvnfast/vignettes/mvnfast.html},
  }