@misc{Culmann_Carl_(1821–1887)_Die_1875, author={Culmann, Carl (1821–1887)}, copyright={Public Domain}, address={Zürich}, howpublished={online}, year={1875}, publisher={Verlag, von Meyer & Zeller (A. Reimmann)}, language={ger}, type={Text}, title={Die graphische Statik. 1 Bd.}, }