@misc{Cayley_Arthur_(1821–1895)_On_1897,
 author={Cayley Arthur (1821–1895)},
 copyright={Domena Publiczna},
 journal={Mathematical papers},
 address={Cambridge},
 howpublished={online},
 year={1897},
 publisher={Cambridge University Press},
 language={eng},
 type={Tekst},
 title={On systems of rays},
 URL={http://rcin.org.pl./Content/125413/PDF/WA35_154348_12807-12_Art78.pdf},
}