@book { DerRatdesKreisesPutbus19521955, title = "Der Rat des Kreises Putbus 1952 - 1955", author = "Maik {Sommer}", year = "2005", publisher = "Diplom.de", address = "Hamburg, Deutschland", doi = "10.3239/9783832440398", url = "https://m.diplom.de/document/219670" }