Collaborative Intensity in Social Networks. - Klaus Stein; Steffen Blaschke (ASONAM, 2009)

Corporate Wikis: A Comparative Analysis of Structures and Dynamics. - Klaus Stein; Steffen Blaschke (Wissensmanagement, 2009)

Interlocking Communication - Measuring Collaborative Intensity in Social Networks. - Klaus Stein; Steffen Blaschke (From Sociology to Computing in Social Networks, 2010)