The concept of multilevel population thinking suggests looking at evolution of any system of entities as at a multilevel process with selection forces operating on populations of units as well as on populations of groups of these units. The concept has allowed explaining some phenomena in...

This paper studies the geographical breadth of knowledge spillovers. Previous research suggests that knowledge spillovers benefit from geographical proximity in technologically active and rich regions more than elsewhere. An alternative view explains the geographical breadth of knowledge...

This paper analyses the association between inter-firm collaborative agreements and the technological capabilities of the largest European electronics firms between 1984 and 1997. To this purpose we collected information about 2,240 R&D agreements sponsored by the EU and 1,970 non sponsored...