9781849800266 | Edward Elgar Pub, May 1, 2010, cover price $180.00 | About this edition: In this innovative work, Robert Delorme comprehensively explores uncertainty (the irreducibility to numerically measurable probabilities) and ignorance in economics, management and the social sciences through an alternative, systematically built analytical framework.

9781852788742 | Edward Elgar Pub, January 1, 1995, cover price $151.00 | About this edition: This important volume of original essays by a distinguished group of scholars from the evolutionary, institutional and socio-economic schools makes a major contribution to the reconstruction of political economy as an evolutionary science.