@book{UBHD-1458452, editor={Tietze, Heinrich}, publisher={Biederstein}, address={M{\"u}nchen}, year={1949}, pages={303 S.}, language={ger}, note={R{\"u}ckent.: Mathematische Probleme}, library={UB [Signatur: L 96-135-20::2] ; MA [Signatur: Tietz::2]}, }