3Grover, Rajiv and V Srinivasan. 1992. "Evaluating the Multiple Effects of Retail Promotions on Brand- Loyal and Brand - Switching Segments. " Journal of Marketing Research 29(February) : 76 - 89.
4Simon, Carol J, and Mary W. Sullivan. 1993. "The Measurement and Determinants of Brand Equity: A Financial Approach. "'Marketing Science 12 (Winter) : 28 - 52.