To cite gcmr in publications use:

Masarotto G, Varin C (2017). “Gaussian Copula Regression in R.” Journal of Statistical Software, 77(8), 1–26. doi:10.18637/jss.v077.i08.

Corresponding BibTeX entry:

  @Article{,
    title = {Gaussian Copula Regression in {R}},
    author = {Guido Masarotto and Cristiano Varin},
    journal = {Journal of Statistical Software},
    year = {2017},
    volume = {77},
    number = {8},
    pages = {1--26},
    doi = {10.18637/jss.v077.i08},
  }