@misc{Mathews_George_Ballard_(1861—1922)_Polygons_1892-1893,
 author={Mathews, George Ballard (1861—1922)},
 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={Polygons of minimum perimeter circumscribed to an ellipse},
 URL={http://rcin.org.pl/Content/109149/PDF/WA35_88078_cz294-1893-t22_Art8.pdf},
}