@misc{Bessel_Friedrich_Wilhelm_Abhandlungen_1876,
 author={Bessel, Friedrich Wilhelm},
 address={Leipzig},
 howpublished={online},
 year={1876},
 publisher={Verlag von Wilhelm Engelmann},
 language={ger},
 type={text},
 title={Abhandlungen von Friedrich Wilhelm Bessel. Bd.3},
 keywords={physics and geodesy, Bessel instruments},
}