@misc{Cayley_Arthur_(1821–1895)_On_1893-1894,
 author={Cayley, Arthur (1821–1895)},
 volume={XXIII},
 editor={Glaisher, James Whitbread Lee (1848–1928)},
 copyright={Public Domain},
 journal={The Messenger of Mathematics},
 address={London ;},
 address={Cambridge},
 howpublished={online},
 year={1893-1894},
 publisher={Macmillan and Co.},
 language={eng},
 language={eng},
 title={On the nine-points circle},
 type={Text},
 URL={http://rcin.org.pl/impan/Content/109409/PDF/WA35_88012_cz294-1894-t23_Art5.pdf},
}