• DOI http://dx.doi.org/10.18177/sym.2015.55.rev.10862
  • PDF https://www.jstor.org/stable/26574404

  • DOI http://dx.doi.org/10.18177/sym.2015.55.itm.10861
  • PDF https://www.jstor.org/stable/26574400

  • DOI http://dx.doi.org/10.18177/sym.2015.55.rev.10860
  • PDF https://www.jstor.org/stable/26574409

  • DOI http://dx.doi.org/10.18177/sym.2015.55.fr.10859
  • PDF https://www.jstor.org/stable/26574417