1. Ayanian, Robert (1975), “Advertising and Return,” Journal of Law and Economics, (October), 479–506.
2. Ballantine, John W., Cleveland, Frederick W., and Koeller, C. Timothy (1992), “Characterizing Profitable and Unprofitable Strategies in Small and Large Businesses,” Journal of Small Business Management, 30(2), 13–24.
3. Barney, Jay (1991), “Firm Resources and Sustained Competitive Advantage,” Journal of Management, 17(1), 99–120.
4. Bloch, Harry (1974), “Advertising and Profitability: A Reappraisal,” Journal of Political Economy, 81, 267–286.
5. Caves, Richard and Porter, Michael (1977), “From Entry Barriers to Mobility Barriers: Conjectural Decisions and Contrived Deterrence to New Competition,” Quarterly Journal of Economics, 91 (May), 421–434.