To cite grImport in publications use:
Murrell P (2009). “Importing Vector Graphics: The grImport Package for R.” Journal of Statistical Software, 30(4), 1–37. doi:10.18637/jss.v030.i04.
Corresponding BibTeX entry:
@Article{, title = {Importing Vector Graphics: The {grImport} Package for {R}}, author = {Paul Murrell}, journal = {Journal of Statistical Software}, year = {2009}, volume = {30}, number = {4}, pages = {1--37}, doi = {10.18637/jss.v030.i04}, }