摘要：An economic subject participating in the activity of economic groups and supplying access goods can choose one of the strategies that could influence the institutions of the European Union. The choice of strategies is conditioned by the participation of the subject in economic activity and the comparative analysis of the results of the economic costs and benefit obtained. The economic costs of the access goods supplied by economic interest groups and the impact goods supplied by the European Union administration institutions and the comparison of their profitability precondition the rationality of the strategy choice of an economic subject. The results of the analysis of economic costs allow to more exactly evaluate access goods supply considering the main three access goods types and four types of the main suppliers of access goods. The function of the supply of access goods by economic interest groups is defined as the dependence of impact goods quantity on the quantity of access goods. This function is dependent on the kind of an economic interest group. The article presents the main four types of economic interest groups, that allows to more precisely evaluate the supplied impact goods with respect to economic and social costs. The article presents the analysis of the results of foreign and Lithuanian researchers as well as the activity of economic interest groups and the evaluation of the benefits of the access goods supplied by different EU administration institutions. Distinguishing the European Union Parliament, Commission and the Board as the main governing institutions as well as taking into account decision making algorithm, it has been possible to more precisely evaluate the profitability of the commodities supplied by economic interest groups. The analysis results obtained by the authors of this article in the field of interrelationship of the European Parliament and national groups of economic interests have revealed the influence of these two groups in representing national and common European economic interest.
关键词：economic interest groups; commodity supply and demand function; lobbyism commodities.
