@misc{Cayley_Arthur_(1821–1895)_Note_1897, author={Cayley, Arthur (1821–1895)}, volume={13}, copyright={Public Domain}, journal={Mathematical papers}, address={Cambridge}, howpublished={online}, year={1897}, publisher={Cambridge University Press}, language={eng}, type={Text}, title={Note on the so-called quotient G/H in the theory of groups}, URL={http://rcin.org.pl./Content/146734/PDF/WA35_181569_12807-13_Art934.pdf}, }