@misc{Hoppe-Seyler_F._von_Ueber,
 author={Hoppe-Seyler, F. von},
 address={Berlin},
 howpublished={online},
 publisher={C. G. Lüderitz'sche Verlagsbuchhandlung, A. Charisius},
 type={książka},
 title={Ueber Spectralanalyse},
}