- Handbook of Quantitative Science and Technology Research
- Information Research (2005)
- Journal of Informetrics 6(1):140 - 153 (2012)
- The Public Journal of Semiotics 3(1):28-50 (2011)
- Database Systems for Advanced Applications, volume 6193 of Lecture Notes in Computer Science, Springer, Berlin / Heidelberg, (2010)
- Journal of Informetrics 5(1):14-26 (2011)
- The Teachers College Record 112(10):2664-2702 (2010)
- Gewalt in Deutschland: soziale Befunde und Deutungslinien, Oldenbourg, München, (1995)
- Scientometrics 52(3):487-502 (2001)
- Abo, (2005)
- Journal of Informetrics 4(4):629-635 (2010)
- MIT Press, Cambridge, Mass., (2010)
- Handbuch Netzwerkforschung, VS Verlag für Sozialwissenschaften, Wiesbaden, (2010)
- Social Networks 30(1):69-82 (2008)
- Exceptional Children 38(9):695-703 (1972)
- Oklahoma State University US, (2005)
- (2009)
- Stanford Humanities Review (1995)
- PLoS One (2010)
- Journal of the American Society for Information Science and Technology 61(4):772-786 (2010)
- The American Sociologist 37(2):67-86 (2006)


user