1. Bendat, J., and Piersol, A., Random Data: Analysis and Measurement Procedures, John Wiley & Sons, New York, 1986.
2. Churchill, G. A., Marketing Research: Methodological Foundations, The Dryden Press, Fort Worth, 1999.
3. Dahan, E., and Srinivasan, V., “The Predictive Power of Internet-Based Product Concept Testing Using Visual Depiction and Animation,” 1998.
4. Foster, R., Innovation: The Attacker’s Advantage, Summit Books, New York, 1986.
5. Fujita, K., and Ishii, K., “Task Structuring Toward Computational Approaches to Product Variety Design,” Proceedings of the 1997 Design Automation Conference ASME #DETC97/DAC-3766, 1997.