This thesis consists of 4 chapters in the field of applied microeconomics. Chapter 1 develops a model of international roaming. International alliances emerge endogenously and serve as a commitment device to soften competition on the retail market. Chapter 2 provides an explanation for why...

The ongoing globalisation has not stopped short of the banking sector. From a political point of view wide voiced concerns about the effect of such banking globalisation have arisen. From a scientific perspective, one of the open points left for dicussion, is the question which factors shape...