By Li Bao Qin   in American Mathematical Monthly

ISSN:1930-0972|121|1|75-77

Mathematical Association of America‎(2014)‎

Access to resources Favorite 15.57802

By Li Bao Qin   in American Mathematical Monthly

ISSN:1930-0972|122|2|169-172

Mathematical Association of America‎(2015)‎

Access to resources Favorite 15.57802

By Hu Pei-Chu   Li Bao-Qin   in Journal of Mathematical Sciences

ISSN:1072-3374|173|2|201-206

Springer Publishing Company ‎(2011)‎

Access to resources Favorite 3.2382798