To cite the rpanel package in publications use:

Bowman, A. W. and Crawford, E. (2008). R package 'rpanel': simple control panels (version 1.0-5) URL http://www.stats.gla.ac.uk/~adrian/rpanel

Corresponding BibTeX entry:

  @manual{,
    title = {{R} package \texttt{rpanel}: simple control panels
      (version 1.0-5)},
    author = {A. W. Bowman and E. Crawford},
    address = {University of Glasgow, UK},
    year = {2008},
    url = {URL http://www.stats.gla.ac.uk/~adrian/rpanel},
  }