A general econometric model is developed and used to estimate the share of cash in consumer point-of-sale transactions in Norway over 1980-99. The share of cash fell from 90% during the 1980s to 50% in 1999, primarily due to debit card growth. Additional data from banks, stores, and elsewhere...

The key message of this book is that heterogeneity should be seen as an intrinsic and indispensable element of knowledge systems. The authors address the concept of heterogeneity in a multi-disciplinary fashion, including perspectives from evolutionary economics and innovation system studies,...