... MUSA extension. 2. DIFFERENT METHODOLOGICAL APPROACHES FOR CUSTOMER SATISFACTION 2.1. Kano’s model for customer satisfaction In many cases customer satisfaction has been seen mostly as a one-dimensional ... 2 Customer satisfiedCustomer dissatisfiedRequirementfulfilledRequirementnot fulfilledMust-be requirements- implied- self-evident- not expressed- obviousAttractive requirements- not expressed- customer- tailored- ... criterion according to customers’ preferences can be assessed and compared with the results of the MUSA method. For each criterion i =1,2,..n and each customer Mj ,...,2,1=customers and n is the...