We analyze the impact of obsolescence of economic inventions by incorporating maintenance costsin the endogenous growth model of expanding product varieties. This contrasts with the existingliterature, which ignores maintenance costs and uses the model of quality improvements todescribe...

Fragmentation of production into more and more complex supply chains is a prominent feature of globalisation. It implies that transaction costs as part of total costs of ownership carry a large weight in procurement decisions. An analysis of the various types of transaction costs is also...