@misc{Cayley_Arthur_(1821–1895)_Note_1892,
 author={Cayley Arthur (1821–1895)},
 volume={5},
 copyright={Public Domain},
 address={Cambridge},
 journal={The collected mathematical papers of Arthur Cayley},
 howpublished={online},
 year={1892},
 publisher={Cambridge University Press},
 language={eng},
 type={Text},
 title={Note on Lobatschewsky's Imaginary Geometry},
 URL={http://www.rcin.org.pl/Content/129074/PDF/WA35_156122_12807-5_Art362.pdf},
}