@misc{Rouse_Ball_Walter_William_(1850–1925)_Mersenne's_1891-1892,
 author={Rouse Ball, Walter William (1850–1925)},
 volume={XXI},
 editor={Glaisher, James Whitbread Lee (1848–1928)},
 copyright={Public Domain},
 address={London ;},
 address={Cambridge},
 journal={The Messenger of Mathematics},
 howpublished={online},
 year={1891-1892},
 publisher={Macmillan and Co.},
 language={eng},
 type={Text},
 title={Mersenne's numbers},
 URL={http://rcin.org.pl/Content/108941/PDF/WA35_87635_cz294-1892-t21_Art6.pdf},
}