@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://rcin.org.pl./Content/125146/PDF/WA35_154672_12807-4_Sur-la-courbe.pdf}, }