By Pong Wai Yan   in Communications in Algebra

ISSN:0092-7872|30|12|5933-5939

Taylor & Francis Ltd‎(2002)‎

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By Pong Wai Yan   in The College Mathematics Journal

ISSN:1931-1346|38|2|119-123

Mathematical Association of America‎(2007)‎

Access to resources Favorite 20.28415