@misc{Cayley_Arthur_(1821–1895)_Eisenstein's_1890,
 author={Cayley, Arthur (1821–1895)},
 volume={3},
 copyright={Public Domain},
 journal={Mathematical papers},
 address={Cambridge},
 howpublished={online},
 year={1890},
 publisher={Cambridge at the University Press},
 language={eng},
 type={Text},
 title={Eisenstein's geometrical proof of the fundamental theorem for quadric residues (translated from the Original Memoir, Crelle, t. XXVIII. (1844), with an Addition, by A. Cayley.)},
 URL={http://rcin.org.pl./Content/170954/PDF/WA35_184425_12807-3_art-11.pdf},
}