1. Anderson, Carl R. and Frank T. Paine (1978), "PIMS: A Reexamination," Academy of Management Review, 3 (July), 602–612.
2. Beik, Leland L. and Stephen L. Buzby (1973), "Profitability Analysis by Market Segment," Journal of Marketing, 37 (July), 48–53.
3. Buzzell, Robert D., Bradley T. Gale, and Ralph G.M. Sultan (1975), "Market Share‐‐A Key To Profitability," Harvard Business Review, 53 (January– February), 97–106.
4. — and Frederick D. Wiersema (1981), "Successful Sharebuilding Strategies," Harvard Business Review, 59 (January–February), 135–144.
5. Cohen, Jacob and Patricia Cohen (1975), Applied Multiple Regression/Correlation Analysis for the Behavioral Sciences. New York: John Wiley … Sons.