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9Fredehek. Newell.Why CRM Doesnt Work: HOW tO Win by Letting Customers Manag the Relarionship[ M ].B100mberg Press, 2003.
10Gemid Zaltman.HOW CustOmers Think: Essential Insights intO the Mind Of the Market[ M ] . Harvard BUSiness SCh001 Press, 2003.