We analyze recent contributions to growth theory based on the model of expanding variety of Romer [Romer, P. (1990). “Endogenous technological change”. Journal of Political Economy 98, 71–102]. In the first part, we present different versions of the benchmark linear model with imperfect...

Giovanni Dosi is recognized as one of the world's leading scholars in industrial economics and corporate change. This volume contains a selection of his most important work and provides an excellent overview of the contribution he has made to the economics of innovation and technical change. Key...