This paper considers a vertically separated industry with an upstream monopolist who supplies an essential input to two downstream Cournot firms. This situation is relevant to a number of sectors, including the telecommunications industry where trunk operators must have access to the local...

The problem of a monopolist firm that supplies an essential input to other firms that compete in the final downstream market is crucial in many utility industries that use a network. When downstream firms have different degrees of efficiency, then it could be feasible to charge them different...

Scarce storage capacity and distortions in access to gas storage are considered causes of market foreclosure in liberalized gas markets. We consider rules currently adopted in Europe for storage rationing and propose efficient rationing mechanism based on the value of storage, when other...