@book{von-Erckert-1895,
  address    = {Wien},
  author     = {von Erckert, R.},
  publisher  = {Hölder},
  title      = {Die Sprachen des kaukasischen Stammes},
  year       = {1895},
  iso_code   = {ava; agx},
  olac_field = {typology; general_linguistics; syntax},
  wals_code  = {agl; ava}
}