The transport system of the Recife Metropolitan Area is under change. As a subsidy to its change an efficiency analysis is done with the purpose of highlighting characteristics of the efficient systems. Twelve transport system from several countries in Europe and seven from Brazil are analyzed:...

The question of whether legalization affects immigrants' economic returns has been the focus of many empirical studies in recent decades. Results have consistently shown that there are significant wage differences between legal and illegal workers. However, the validity of such findings has been...