1. Antil J.H., (1985). Couponing as a Promotional Tool: Consumers Do Benefit. The Journal of Consumer Affairs, 19: 316–327.
2. Blattberg R.C. and Scott A. N., (1989). Sales Promotions: Concepts Methods and Strategies, Englewood Cliffs, NJ: Prentice-Hall
3. Buzzell R. et al.. (1990). The Costly Bargain of Trade Promotions. Harvard Business Review68: 141–159.
4. Caminal R., (1996). Price Advertising and Coupons in a Monopoly Model. Journal of Industrial Economics, 64: 33–52.
5. Chapman R.G., (1986). Assessing the Profitability of Retailer Couponing with A Low-Cost Field Experiment. Journal of Retailing, 62: 19–39.