. We approach this omission by analyzing the role of positive and negative externalities of link formation. This yields … general results that relate situations of positive externalities with stable networks that cannot be “too dense” in a well …-defined sense, while situations with negative externalities tend to induce “too dense” networks. …

welfare effects of small policy changes in the presence of transport externalities. The model incorporates three types of … externalities: congestion, which has a feedback effect on the behaviour of the economic agents, air pollution and accidents. The … the equity effects of the policy reforms. The second contribution is related to the way in which the externalities are …

encompasses many economic models with externalities and outside options. We show that when outside options are pure (i …

Relatively little attention has been paid to the role that externalities play in determining the pecuniary returns to … and/or geographical (regional and interregional) externalities. The results point out that while education is a … education between migrants and non-migrants. The paper also finds that household, regional, and interregional externalities …

externalities. In the context of the partition function, it is shown that any member of this class of sharing schemes leads to the … sharing scheme is particularly powerful for economic problems that are characterized by positive externalities from coalition …

externalities. These case studies for Belgium confirm earlier results of the ExternE project that external environmental costs of … externalities of urban peak traffic are 2 to 4 times higher than for normal urban driving conditions. Finally, it calculates which …