By Northshield Sam   in American Mathematical Monthly

ISSN:1930-0972|121|10|927-931

Mathematical Association of America‎(2014)‎

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By Northshield Sam   in American Mathematical Monthly

ISSN:1930-0972|118|2|171-175

Mathematical Association of America‎(2011)‎

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By Northshield Sam   in Mathematics Magazine

ISSN:1930-0980|80|4|294-298

Mathematical Association of America‎(2007)‎

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By Northshield Sam   in Mathematics Magazine

ISSN:1930-0980|86|2|136-143

Mathematical Association of America‎(2013)‎

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By Northshield Sam   in American Mathematical Monthly

ISSN:1930-0972|117|7|581-598

Mathematical Association of America‎(2010)‎

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By Northshield Sam   in American Mathematical Monthly

ISSN:1930-0972|122|5|466-466

Mathematical Association of America‎(2015)‎

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