Although there is growing evidence on the role of agglomeration economies in the formation and growth of firms, both the concepts of agglomeration economies and entrepreneurship tend to be ambiguously defined and measured in the literature. In this study, we aim to improve the conceptualisations...

This paper contributes to the debate on localized knowledge externalities as potential source for firm productivity gains. We apply multilevel analysis to link firm productivity (and growth) to knowledge intensive spatial contexts in the Netherlands. If localized knowledge externalities are...