@misc{Cayley_Arthur_(1821–1895)_Correction_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={Correction of two Theorems relating to the In-and-circumscribed Polygon}, URL={http://rcin.org.pl/impan/Content/122052/PDF/WA35_149113_12807-2_Art16.pdf}, }