By Propp James   in American Mathematical Monthly

ISSN:1930-0972|120|5|392-408

Mathematical Association of America‎(2013)‎

Access to resources Favorite 17.536713

By Propp James   in Mathematics Magazine

ISSN:1930-0980|85|1|34-36

Mathematical Association of America‎(2012)‎

Access to resources Favorite 17.536713

By Kheifets Alexander   Propp James   in Mathematics Magazine

ISSN:1930-0980|83|3|222-225

Mathematical Association of America‎(2010)‎

Access to resources Favorite 14.029371

By Feldman David   Propp James   Robins Sinai   in Discrete & Computational Geometry

ISSN:0179-5376|46|1|184-186

Springer Publishing Company ‎(2011)‎

Access to resources Favorite 10.522028