The Importance of Increasing Returns to Scale in the Process of   Agglomeration in Portugal: A Non-linear Empirical Analysis
  With this work we try to analyse the agglomeration process in the Portuguese regions, using the New Economic Geography models. In these models the base idea is that where has increasing returns to scale in the manufactured industry and low transport costs, there is agglomeration. Of referring, as summary conclusion, that with this work the existence of increasing returns to scale and low transport cost, in the Portuguese regions, was proven and as such the existence of agglomeration in Portugal. 
Vitor Joao Pereira Domingues Martinho
q-fin.GN