By Berkove Ethan   in The College Mathematics Journal

ISSN:1931-1346|37|5|385-386

Mathematical Association of America‎(2006)‎

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By Berkove Ethan   in PRIMUS

ISSN:1051-1970|23|6|507-518

Taylor & Francis Ltd‎(2013)‎

Access to resources Favorite 23.069002