@book{cbdu12060,
       publisher = {[B. dr.]},
          number = {1206},
           title = {Kurze Beschreibung der k{\"o}niglichen polnischen Kr{\"o}nung},
         address = {Wroc{\l}aw},
             url = {http://cbdu.ijppan.pl/id/eprint/12060/}
}