@misc{Olbers_Wilhelm_Wilhelm_1900,
 author={Olbers, Wilhelm},
 address={Berlin},
 howpublished={online},
 year={1900},
 publisher={Verlag von Julius Springer},
 language={ger},
 type={text},
 title={Wilhelm Olbers sein Leben und seine Werke. Bd. 2 (Abt. 1)},
 keywords={Olbers, Wilhelm, Olbers and Gauss correspondence, correspondence since 1802 for 1819 year, tables of comets and planets},
}