This paper provides an empirical investigation of the impact of innovation on firms' economic performance pinpointing complementarities between product and marketing innovation during the period 1998-2008. Firms' profitability and productivity are simultaneously estimated, thus allowing for...

The analysis of the persistence of profits has long been a controversial issue within empirical industrial organisation literature. The aim of our paper is to provide new empirical findings that may account for patterns of both sectoral and firm profit persistence. The distinctive feature of our...