with Holz, H. , Nomura, N. , Schaaf, M. , 2005, Second workshop on knowledge management for distributed agile processes: models, techniques, and infrastructure (kmdap 2005), in K. Dieter Althoff, A. Dengel, R. Bergmann & M. Nick (eds.), Professional knowledge management, Berlin, Springer, pp. 398-399.
with Holz, H. , Bernardi, A. , 2005a, Leveraging passive paper piles to active objects in personal knowledge spaces, in K. Dieter Althoff, A. Dengel, R. Bergmann & M. Nick (eds.), Professional knowledge management, Berlin, Springer, pp. 50-59.