@misc{Barlow_C.W.C._Elementary_1923,
 author={Barlow, C.W.C. and Bryan, G.H.},
 address={London},
 howpublished={online},
 year={1923},
 publisher={W. B. CLIVE},
 language={eng},
 title={Elementary mathematical astronomy},
 keywords={celestial mechanics, mathematical astronomy},
}