Silva, Mário A. P. M. - Faculdade de Economia, Universidade do Porto - 2009
The present model is essentially Romer’s (1990) model of endogenous growth with intertemporal knowledge externalities …, augmented with contemporaneous knowledge externalities to give a richer explanation of the growth process. Both types of … knowledge spillovers seem essential to capturing the features of knowledge in a model of growth. Introducing synchronic …