@misc{Cayley_Arthur_(1821–1895)_Note_1894, author={Cayley, Arthur (1821–1895)}, volume={7}, copyright={Public Domain}, address={Cambridge}, journal={Mathematical papers}, howpublished={online}, year={1894}, publisher={Cambridge University Press}, language={eng}, title={Note on Lambert's Theorem for Elliptic Motion}, type={Text}, URL={http://www.rcin.org.pl/Content/148103/PDF/WA35_178289_12807-7_Art56.pdf}, }