c(
    person("Hadley", "Wickham", ,"hadley@rstudio.com", role = c("aut", "cre")),
    person("RStudio", role = "cph", comment = "Copyright holder of all R code
      and all C/C++ code without explicit copyright attribution"),
    person("Marcin", "Kalicinski", role = c("ctb", "cph"), comment = "Author of included RapidXML code"),
    person("Komarov Valery", role = c("ctb", "cph"), comment = "Author of included libxls code"),
    person("Christophe Leitienne", role = c("ctb", "cph"), comment = "Author of included libxls code"),
    person("Bob Colbert", role = c("ctb", "cph"), comment = "Author of included libxls code"),
    person("David Hoerl", role = c("ctb", "cph"), comment = "Author of included libxls code")
    )
Import excel files into R. Supports '.xls' via the embedded
    'libxls' C library (http://sourceforge.net/projects/libxls/) and '.xlsx' via
    the embedded 'RapidXML' C++ library (http://rapidxml.sourceforge.net). Works on
    Windows, Mac and Linux without external dependencies.
Hadley Wickham [aut, cre],
  RStudio [cph] (Copyright holder of all R code and all C/C++ code
    without explicit copyright attribution),
  Marcin Kalicinski [ctb, cph] (Author of included RapidXML code),
  Komarov Valery [ctb, cph] (Author of included libxls code),
  Christophe Leitienne [ctb, cph] (Author of included libxls code),
  Bob Colbert [ctb, cph] (Author of included libxls code),
  David Hoerl [ctb, cph] (Author of included libxls code)