@book{Wowcerk-1951,
  address    = {Leipzig},
  author     = {Wowcerk, P.},
  publisher  = {Volk und Wissen Verlag},
  title      = {Obersorbische Grammatik},
  year       = {1951},
  iso_code   = {hsb; dsb},
  olac_field = {phonetics; phonology; general_linguistics; typology},
  wals_code  = {srb}
}