We are now living in a period of disillusion in the ability of economic policy to stabilise the economy. This is proven by the onset of severe world recession in the early 1980s and the inability to invert the negative phase of the business cycle under way in the industrialized countries in the early 1990s. The failure of old policies motivates the research into the causes of economic fluctuations and their measurement whose results are published in this volumeweiterlesen