ملخص المقالة :
For two normal edge-transitive Cayley graphs on groups H and K which have nocommon direct factor and $\gcd(|H/H^\prime|,|Z(K)|)=1=\gcd(|K/K^\prime|,|Z(H)|)$, we consider fourstandard products of them and it is proved that only tensor product of factors can be normaledge-transitive.
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