"Mundell and Markusen each wrote classic papers on the relationship between trade and factor movement. Mundell showed that substitution holds in the Heckscher-Ohlin model. Markusen challenged the substitution result and showed in five different models that removing barriers to factor movement...

The five main lessons for Southern Africa from our review of the experiencewith cross-border power trading in other regions of the work are that: Security of supply concerns need to be explicitly addressed and understood by the parties to proposed cross-border transactions. Regional entities...

An efficient and affordable access to jobs, education and services is considered a fundamental element for development. However, the mobility conditions in the cities have deteriorated because of the increasing motorization and urbanization. The number of new cars that enter the cities every...