citHeader("This R package is based on the Pscan web platform described in
          the following publication")

bibentry(
  bibtype = "Article",
  title = paste("Pscan: finding over-represented transcription factor",
                "binding site motifs in sequences from co-regulated or",
                "co-expressed genes."),
  author = c(person("Federico", "Zambelli"), person("Graziano", "Pesole"),
             person("Giulio", "Pavesi")),
  journal = "Nucleic Acids Research",
  year = "2009",
  volume = "37",
  pages = "W247-W252",
  doi = "10.1093/nar/gkp464"
)