citHeader("To cite colorspace in publications use")

## R >= 2.8.0 passes package metadata to citation().
if(!exists("meta") || is.null(meta)) meta <- packageDescription("colorspace")
year <- sub("-.*", "", meta$Date)
note <- sprintf("R package version %s", meta$Version)

citEntry(entry = "Manual",
         title = "{colorspace}: Color Space Manipulation",
         author = personList(as.person("Ross Ihaka"), 
	                     as.person("Paul Murrell"),
                             as.person("Kurt Hornik"),
			     as.person("Achim Zeileis")),
         year = year,
         note = note,
         url = "http://CRAN.R-project.org/package=colorspace",

         textVersion =
         paste("Ross Ihaka, Paul Murrell, Kurt Hornik, Achim Zeileis",
   	       sprintf("(%s).", year),	 
               "colorspace: Color Space Manipulation.",
	       paste(note, ".", sep = ""),
               "URL http://CRAN.R-project.org/package=colorspace")
)

citEntry(entry = "TechReport",
         title = "Escaping {RGB}land: Selecting Colors for Statistical Graphics",
         author = personList(as.person("Achim Zeileis"), 
	                     as.person("Kurt Hornik"),
                             as.person("Paul Murrell")),
         institution  = "Department of Statistics and Mathematics, Wirtschaftsuniversit\\\"at Wien, Research Report Series",
         year         = "2007",
	 type         = "Report",
	 number       = "61",
	 month        = "November",
	 url          = "http://epub.wu-wien.ac.at/",
         
         textVersion = 
         paste("Achim Zeileis, Kurt Hornik, Paul Murrell (2007).", 
               "Escaping RGBland: Selecting Colors for Statistical Graphics.",
	       "Report 61.",
	       "Department of Statistics and Mathematics, Wirtschaftsuniversitaet Wien, Research Report Series.",
	       "URL http://epub.wu-wien.ac.at/."),
	 header = "If you use HCL-based color palettes, please cite:"
)
