1. Vidale, M. L., and Wolfe, H. B., An Operations Research Study of Sales Response to Advertising, Operations Research, Vol. 5, pp. 370–381, 1957.
2. Sethi, S. P., Dynamic Optimal Control Models in Advertising:A Survey, SIAM Review, Vol. 19, pp. 685–725, 1977.
3. Feichtinger, G., Hartl, R. F., and Sethi, S. P., Dynamic Optimal Control Models in Advertising: Recent Developments, Management Science, Vol. 40, pp. 195–226, 1994.
4. CMR/TNS Media Intelligence, US Advertising Market Shows Healthy Growth: Spending Up 4. 2%in 2002; see http://www. tnsmi-cmr. com/news/2003/031003. html (March 10, 2003).
5. Patti, C. H., and Blasko, V. J., Budgeting Practices of Big Advertisers, Journal of Advertising Research, Vol. 21, pp. 23–29, 1981.