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Testmarktsimulator zum Produkttest in kleinen und mittleren Unternehmen (Kurzfassung)
Albers, Sönke, (1984)
The cost effectiveness of market research with particular application to the search for new product ideas in fast moving consumer goods
Kraushar, Peter M., (1974)
Product development and market research
Majlát, Ilona, (1968)