Semigroup 5-Graded Ring and Smash Product R#S~*
Zi Long ZHANG, Bing Ling CAI,
Acta Mathematica Sinica, Chinese Series ›› 2004, Vol. 47 ›› Issue (5) : 985-992.
Semigroup 5-Graded Ring and Smash Product R#S~*
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