By Kalman Dan   McKinzie Mark   in American Mathematical Monthly

ISSN:1930-0972|119|1|42-51

Mathematical Association of America‎(2012)‎

Access to resources Favorite 20.589388

By Koetz Matt   Lewis Heather A.   McKinzie Mark   in Math Horizons

ISSN:1947-6213|21|4|26-27

Mathematical Association of America‎(2014)‎

Access to resources Favorite 14.877215