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Böckenholt and Gaul (1987a, October 26). New product introduction based on pre-test market data. ANA - ESOMAR. Retrieved September 26, 2024, from
https://ana.esomar.org/documents/new-product-introduction-based-on-pre-test-market-data
Both and Gaul (1984a, June 15). Analysis of sales of price promoted consumer goods using scanner data. ANA - ESOMAR. Retrieved September 26, 2024, from