1. Department of Sociology, Technical University of Berlin , Sekretariat FH 9-1, Fraunhoferstr. 33-36 , Berlin 10587, Germany
2. Käte Hamburger Kolleg: Cultures of Research, RWTH Achen , Aachen, Germany
3. Ctr Res Evaluat Sci & Technol CREST, Stellenbosch University , South Africa