@misc{Dedekind_Richard_(1831–1916)_Was_1888,
 author={Dedekind, Richard (1831–1916)},
 copyright={Public Domain},
 address={Braunschweig},
 howpublished={online},
 year={1888},
 publisher={Friedrich Vieweg & Sohn},
 language={ger},
 title={Was sind und was sollen die Zahlen?},
 type={Text},
 URL={http://www.rcin.org.pl/Content/5138/PDF/WA35_13030_4797_Was-sind.pdf},
}