By Coates Keith J.   in The College Mathematics Journal

ISSN:1931-1346|42|5|394-396

Mathematical Association of America‎(2011)‎

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By Benthien George W.     Coates Keith J.   in Mathematics Magazine

ISSN:1930-0980|81|3|207-211

Mathematical Association of America‎(2008)‎

Access to resources Favorite 11.078315