@misc{Cayley_Arthur_(1821–1895)_Sur_1891,
 author={Cayley, Arthur (1821–1895)},
 volume={4},
 copyright={Public Domain},
 address={Cambridge},
 journal={Mathematical papers},
 howpublished={online},
 year={1891},
 publisher={University Press},
 language={fre},
 type={Text},
 title={Sur la courbe parallèle à l'ellipse},
 URL={http://www.rcin.org.pl/impan/Content/125146/PDF/WA35_154672_12807-4_Sur-la-courbe.pdf},
}