• DOI http://dx.doi.org/10.18177/sym.2014.54.itm.10846
  • PDF https://www.jstor.org/stable/26574358

  • DOI http://dx.doi.org/10.18177/sym.2014.54.sr.10844
  • PDF https://www.jstor.org/stable/26574363

  • DOI http://dx.doi.org/10.18177/sym.2014.54.rev.10692
  • PDF https://www.jstor.org/stable/26574379

  • DOI http://dx.doi.org/10.18177/sym.2014.54.sr.10691

  • DOI http://dx.doi.org/10.18177/sym.2014.54.mbi.10690
  • PDF https://www.jstor.org/stable/26574357