@book{Gartner-1998,
  address    = {Tübingen},
  author     = {Gärtner, Eberhard},
  publisher  = {Niemeyer},
  title      = {Grammatik der portugiesischen Sprache},
  year       = {1998},
  iso_code   = {por},
  olac_field = {typology; semantics; general_linguistics; syntax},
  wals_code  = {por}
}