• DOI http://doi.org/10.18177/sym.2018.58.fr.11382
  • PDF https://www.jstor.org/stable/26564934

  • DOI https://doi.org/10.18177/sym.2017.57.fr.11358

  • DOI https://doi.org/10.18177/sym.2017.57.fr.11353
  • PDF https://www.jstor.org/stable/26574470

  • DOI https://doi.org/10.18177/sym.2017.57.fr.11341
  • PDF https://www.jstor.org/stable/26574472

  • DOI https://doi.org/10.18177/sym.2017.57.fr.11338
  • PDF https://www.jstor.org/stable/26574471