@misc{Cayley_Arthur_(1821–1895)_On_1896, author={Cayley, Arthur (1821–1895)}, volume={10}, copyright={Public Domain}, journal={Mathematical papers}, address={Cambridge}, howpublished={online}, year={1896}, publisher={Cambridge University Press}, language={eng}, type={Text}, title={On a problem of arrangements}, URL={http://rcin.org.pl/Content/143056/PDF/WA35_168928_12807-10_Art669.pdf}, }