citHeader("Please cite the cna package as:")

  meta <- packageDescription("cna")
  authors <- sprintf("%s", meta$Author)
  year <- sub("-.*", "", meta$Date)
  note <- sprintf("R Package Version %s", meta$Version)
  title <- sprintf("%s", meta$Title)

  bibentry(bibtype = "Manual",
    author = personList(as.person("Mathias Ambuehl"),
                        as.person("Michael Baumgartner"),
                        as.person("Ruedi Epple"),
                        as.person("Alexis Kauffmann"),
                        as.person("Alrik Thiem")),
    year = year,
    title = title,
    note = note,
    url = "http://cran.r-project.org/package=cna",
    textVersion = paste(authors, sprintf("%s", year),
      title, note, "URL: http://cran.r-project.org/package=cna.", sep = ". ")
)

