@misc{Cayley_Arthur_(1821–1895)_The_1891, author={Cayley, Arthur (1821–1895)}, volume={4}, copyright={Public Domain}, journal={Mathematical papers}, address={Cambridge}, howpublished={online}, year={1891}, publisher={University Press}, language={eng}, type={Text}, title={The problem of polyhedra}, URL={http://rcin.org.pl./Content/125153/PDF/WA35_154733_12807-4_The-problem-of.pdf}, }