@misc{Sylvester_James_Joseph_(1814–1897)_Additions_1904,
 author={Sylvester, James Joseph (1814–1897)},
 copyright={Public Domain},
 address={Cambridge},
 howpublished={online},
 year={1904},
 publisher={Cambridge University Press},
 language={eng},
 type={Text},
 title={Additions to the articles ' On a new class of theorems', and ' On Pascal's theorem,'},
 URL={http://www.rcin.org.pl/Content/113694/PDF/WA35_138834_11371-1_Art25.pdf},
}