citHeader("To cite package 'plotrix' in publications use:")
citEntry(entry="Article",
 year = 2006,
 title = "Plotrix: a package in the red light district of R",
 journal = "R-News",
 volume = "6",
 number = "4",
 pages = "8-12",
 author = personList(as.person("Lemon J")),
 textVersion = "Lemon, J. (2006) Plotrix: a package in the red light
  district of R. R-News, 6(4): 8-12."
)