@book{ BA44167903,
  author    = "Guyot, Yves",
  title     = "La représentation proportionnelle",
  publisher = "Bureaux du siecle",
  year      = "1901",
  series    = "Publications du siècle",
  number    = "",
  URL       = "http://ci.nii.ac.jp/ncid/BA44167903"
}