@misc{Sylvester_James_Joseph_(1814–1897)_The_1892-1893, author={Sylvester, James Joseph (1814–1897)}, volume={XXII}, editor={Glaisher, James Whitbread Lee (1848–1928)}, copyright={Public Domain}, address={London ;}, address={Cambridge}, journal={The Messenger of Mathematics}, howpublished={online}, year={1892-1893}, publisher={Macmillan and Co.}, language={eng}, language={eng}, type={Text}, title={The Messenger of MathematicsNote on a nine schoolgirls problem}, URL={http://www.rcin.org.pl/Content/109306/PDF/WA35_88087_cz294-1893-t22_Art17.pdf}, }