Do firms increase product lines to deter entry and, if so, when is such a strategy successful? We use data from UK pharmaceuticals to examine how incumbents respond to change in the threat of entry. In line with the entry deterrence motive, originators' product launch rate is higher when the...

We study a harvesting allocation problem consisting of a given number of fishers and a given number of fishing sites. We develop a framework in which one fisher is designated as Stackelberg leader, while the rest are followers. Moreover we introduce network externalities by taking into account...