@misc{Sylvester_James_Joseph_(1814–1897)_On_1904, author={Sylvester, James Joseph (1814–1897)}, copyright={Public Domain}, address={Cambridge}, howpublished={online}, year={1904}, publisher={Cambridge University Press}, language={eng}, title={On Staudt's theorems cocerning the contents of polygons and polyhedrons, with a note on a new and resembling class of theorems}, type={Text}, URL={http://www.rcin.org.pl/Content/114108/PDF/WA35_139246_11371-1_Art48.pdf}, }