This article is a revised and updated version of an earlier publication2. It begins by looking at the issue of the definition of the third sector arguing in favour of a coming together of the concepts of civil society and social economy - what they share as core values outweighing their...

This paper develops a model in which supply of a non-renewable resource can adjust through two margins: the rate of depletion and the rate of field opening. Faster depletion of existing fields means that less of the resource can ultimately be extracted, and optimal depletion of open fields...

This paper reviews recent work on the economics of fast growing developing country cities, with a focus on Africa. It sets out some of the broad facts about African urbanisation and summarises two recent pieces of research work. The first argues that coordination failure can create multiple...