@misc{Cayley_Arthur_(1821–1895)_The_1897, author={Cayley, Arthur (1821–1895)}, volume={13}, copyright={Public Domain}, address={Cambridge}, journal={Mathematical papers}, howpublished={online}, year={1897}, publisher={Cambridge University Press}, language={eng}, title={The numerical value of P(i),=G(1+i)}, type={Text}, URL={http://www.rcin.org.pl/Content/148864/PDF/WA35_181628_12807-13_Art955.pdf}, }