 citHeader("To cite package 'regress' in publications use:")
     
     ## R >= 2.8.0 passes package metadata to citation().
     if(!exists("meta") || is.null(meta)) meta <- packageDescription("regress")
     year <- sub(".*(2[[:digit:]]{3})-.*", "\\1", meta$Date)
     vers <- paste("R package version", meta$Version)
     
     citEntry(entry="Manual",
              title = "The regress package",
              author = personList(as.person("David Clifford"),
                                  as.person("Peter McCullagh")),
              year = year,
              note = vers,
     
              textVersion =
              paste("David Clifford, Peter McCullagh (",year,
                    "). The regress package ", vers, ".", sep=""))

citEntry(entry="Article",
title="The regress function",
author = personList(as.person("David Clifford"),
as.person("Peter McCullagh")),
journal = "R News",
year = 2006,
volume = 6,
number = 2,
pages = c(6,10),
month = "May",
textVersion = "David Clifford, Peter McCullagh (2006), The regress function, R News 6:2, 6-10")

