0.25 Robert Ayanian, Advertising and Rate of Return, Journal of Law and Economics, 1975.
| { industry industries concentration firms } | 0.25 |
| { model equation estimates estimated } | 0.23 |
| { rate growth rates period } | 0.12 |
| { advertising consumers consumer quality } | 0.12 |
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L. G. Telser, Cutthroat Competition and the Long Purse, Journal of Law and Economics, 1966.