We study two n-player sequential network formation games with externalities. Link formation is tied to simultaneous transfer selection in a Nash demand like game in each period. Players in groups can counterpropose. We give necessary and sufficient conditions for efficiency in terms of cyclical...

We study the group stability of collective decision making when society is organized according to a non directed graph, and groups’ payoff possibilities are given by a partition function. We focus on the stability properties of hierarchical organizations, formally described by minimally...

Tourism and environmental preservation are often conflicting activities, mainly in areas such as coastal lagoons, where seaside mass-tourism comes into contact with a very sensitive ecological system. In this paper we deal with a classical problem of both environmental and tourism economics, the...