• DOI https://doi.org/10.18177/sym.2017.57.sr.11363
  • PDF https://www.jstor.org/stable/26574461

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

  • DOI https://doi.org/10.18177/sym.2017.57.sr.11336
  • PDF https://www.jstor.org/stable/26574458

  • DOI http://dx.doi.org/10.18177/sym.2014.54.fr.10554
  • PDF https://www.jstor.org/stable/26574388

  • DOI http://dx.doi.org/10.18177/sym.2013.53.sr.10308
  • PDF https://www.jstor.org/stable/26564917
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