@misc{Schell_Wilhelm_Joseph_Friedrich_Nikolaus_(1826–1904)_Wilhelm_1914,
 author={Schell, Wilhelm Joseph Friedrich Nikolaus (1826–1904)},
 editor={Salkowski, Erich (1881–1943). Red.},
 copyright={Public Domain},
 address={Leipzig ;},
 address={Berlin},
 howpublished={online},
 year={1914},
 publisher={B. G. Teubner},
 language={ger},
 language={ger},
 type={Text},
 title={Wilhelm Schells allgemaine theorie Theorie der Kurven doppelter Krümmung},
 URL={http://www.rcin.org.pl/Content/8961/PDF/WA35_11800_5568_Wilhelm-Schells.pdf},
}