• DOI https://doi.org/10.18177/sym.2016.56.rev.11151
  • PDF https://www.jstor.org/stable/26574440

  • DOI http://dx.doi.org/10.18177/sym.2016.56.rev.11114
  • PDF https://www.jstor.org/stable/26574439

  • DOI http://dx.doi.org/10.18177/sym.2016.56.rev.11109
  • PDF https://www.jstor.org/stable/26574434

  • DOI http://dx.doi.org/10.18177/sym.2015.55.sr.10881
  • PDF https://www.jstor.org/stable/26574396

  • DOI http://dx.doi.org/10.18177/sym.2015.55.itm.10865
  • PDF https://www.jstor.org/stable/26574398