This article analyzes empirically the main existing theories on income and population city growth: increasing returns to scale, locational fundamentals and random growth. To do this we implement a threshold nonlinearity test that extends standard linear growth regression models to a dataset on...

This paper analyses the evolution of the size distribution of the stock of immigrants in the period 1960-2000. In particular, we are interested in testing the validity of two empirical regularities: Zips law, which postulates that the product between the rank and size of a population is...

The aim of this work is to test empirically the validity of Gibrat's Law in the growth of cities, using data for all the twentieth century of the complete distribution of cities (without any size restrictions) in three countries: the US, Spain and Italy. For this we use different techniques...