• DOI http://dx.doi.org/10.18177/sym.2013.53.sr.10307
  • PDF https://www.jstor.org/stable/26564916

  • DOI http://dx.doi.org/10.18177/sym.2013.53.mbi.10306

  • DOI http://dx.doi.org/10.18177/sym.2013.53.mbi.10305
  • PDF https://www.jstor.org/stable/26564912

  • DOI http://dx.doi.org/10.18177/sym.2013.53.fr.10304
  • PDF https://www.jstor.org/stable/26564928

  • DOI http://dx.doi.org/10.18177/sym.2013.53.sr.10299