• DOI https://doi.org/10.18177/sym.2017.57.fr.11357
  • PDF https://www.jstor.org/stable/26574457

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

  • DOI https://doi.org/10.18177/sym.2016.56.fr.11226
  • PDF https://www.jstor.org/stable/26574450

  • DOI http://dx.doi.org/10.18177/sym.2016.56.sr.11128
  • PDF https://www.jstor.org/stable/26574422