• DOI https://doi.org/10.18177/sym.2017.57.fr.11350

  • DOI http://doi.org/10.18177/sym.2017.57.itm.11346
  • PDF https://www.jstor.org/stable/26574460

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

  • DOI http://dx.doi.org/10.18177/sym.2016.56.sr.11145
  • PDF https://www.jstor.org/stable/26574420

  • DOI http://dx.doi.org/10.18177/sym.2016.56.itm.11120