citHeader("To cite package sp in publications use:")

citEntry(entry="Article",
  author       = "Edzer J. Pebesma and Roger S. Bivand",
  title        = "Classes and methods for spatial data in {R}",
  journal      = "R News",
  year         = 2005,
  volume       = 5,
  number       = 2,
  pages        = "9--13",
  month        = "November",
  url          = "http://CRAN.R-project.org/doc/Rnews/",
  textVersion = 
  paste("Pebesma, E.J., R.S. Bivand, 2005. Classes and methods for spatial data in R.",
	"R News 5 (2), http://cran.r-project.org/doc/Rnews/.")
)

citEntry(entry="book",
  author       = "Roger S. Bivand, Edzer J. Pebesma and Virgilio Gomez-Rubio",
  title        = "Applied spatial data analysis with {R}",
  year         = "2008",
  publisher    = "Springer, NY",
  url          = "http://www.asdar-book.org/",
  textVersion = 
  paste("Roger S. Bivand, Edzer J. Pebesma, Virgilio Gomez-Rubio, 2008.",
	"Applied spatial data analysis with R. Springer, NY.",
	"http://www.asdar-book.org/")
)
