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"Reference To..." in View State Inspector

In reviewing the View State Inspector, I often see the same variable listed many times.  Instead of giving me a Data Type, it says "Reference to variableName".


If I am making multiple references to the same field in a VF page, does each instance take up View State?  Shouldn't it only be the variable itself that it's in the View State?  If the former, what's the best practice to minimize that impact?