@misc{Cayley_Arthur_(1821–1895)_On_1889, author={Cayley Arthur (1821–1895)}, copyright={Public Domain}, journal={Mathematical papers}, address={Cambridge}, howpublished={online}, year={1889}, publisher={Cambridge University Press}, language={eng}, type={Text}, title={On a Theorem on M. Lejeune-Dirichlet's}, URL={http://rcin.org.pl/Content/122047/PDF/WA35_149093_12807-2_Art11.pdf}, }