citHeader("To cite Formula in publications use")

citEntry(entry = "Article",
  title        = "Extended Model Formulas in {R}: Multiple Parts and Multiple Responses",
  author       = personList(as.person("Achim Zeileis"),
                   as.person("Yves Croissant")),
  journal      = "Journal of Statistical Software",
  year         = "2010",
  volume       = "34",
  number       = "1",
  pages        = "1--13",
  url          = "http://www.jstatsoft.org/v34/i01/",

  textVersion  =
  paste("Achim Zeileis, Yves Croissant (2010).",
        "Extended Model Formulas in R: Multiple Parts and Multiple Responses.",
        "Journal of Statistical Software 34(1), 1-13.",
        "URL http://www.jstatsoft.org/v34/i01/.")
)
