Search for: [Abstrakt = "In this article the author refers to the problem of modeling the marketing research efficiency based on a theoretical description of GMREM model. The issues include the nature and functionality of the GMREM. In the first part of the text a one\-equation model was constructed in which the effects of companies business activities are dependent on marketing activities, including marketing research. The second part presents a model of interdependent multiple equations. Ultimately a model in which the model parameters change over time is also considered"]

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