1. Max Planck Institute for Solid State Research; Heisenbergstraβe 1 D-70569 Stuttgart Germany
2. Division for Science and Innovation Studies, Administrative Headquarters of the Max Planck Society; Hofgartenstraβe 8 80539 Munich Germany
3. FIZ Karlsruhe; Hermann-von-Helmholtz-Platz 1 D-76344 Eggenstein-Leopoldshafen Germany
4. Amsterdam School of Communication Research (ASCoR); University of Amsterdam; Kloveniersburgwal 48 1012 CX Amsterdam The Netherlands