By Cao Penghao   Yuan Liping   in American Mathematical Monthly

ISSN:1930-0972|118|8|743-746

Mathematical Association of America‎(2011)‎

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By Yuan Liping   Zamfirescu Tudor   in Discrete & Computational Geometry

ISSN:0179-5376|37|4|671-676

Springer Publishing Company ‎(2007)‎

Access to resources Favorite 12.482035