@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},
 type={Text},
 title={On a porismatic property of two conics having with one another a contact of the third order},
 URL={http://www.rcin.org.pl/Content/113697/PDF/WA35_138839_11371-1_Art27.pdf},
}