A new general-equilibrium model that links together rural-to-urban migration, the externality effect of the average level of human capital, and agglomeration economies shows that in developing countries, unrestricted rural-to-urban migration reduces the average income of both rural and urban...

The paper presents a review of selected definitional issues, theoretical concepts and most recent empirical evidence related to the phenomenon of immigrant self-employment. Based on the appraisal of gathered material it also points to possible areas of development of future research in the field.