@misc{Brendel_Martin_Theorie_1909,
 author={Brendel, Martin},
 address={Berlin},
 howpublished={online},
 year={1909},
 publisher={Weidmannsche Buchhandlung},
 language={ger},
 type={text},
 title={Theorie der kleinen Planeten. Tl. 2},
 keywords={planetary system, minor planets},
}