@misc{Rouse_Ball_Walter_William_(1850–1925)_Even_1893-1894,
 author={Rouse Ball, Walter William (1850–1925)},
 volume={XXIII},
 editor={Glaisher, James Whitbread Lee (1848–1928)},
 copyright={Public Domain},
 address={London ;},
 address={Cambridge},
 journal={The Messenger of Mathematics},
 howpublished={online},
 year={1893-1894},
 publisher={Macmillan and Co.},
 language={eng},
 language={eng},
 type={Text},
 title={Even magic squares},
 URL={http://rcin.org.pl/Content/110471/PDF/WA35_88025_cz294-1894-t23_Art18.pdf},
}