Cracking the Nut - But Which Nutcracker to Use? Diversity in Approaches to Analyzing Collaborative Processes in Technology-Supported Settings. - Nikol Rummel; Hans Spada; Cynthia Carter Ching; X. Christine Wang; Dan Suthers; Rainer Bromme; Regina Jucks; Anne Runde; Frank Fischer 001; Armin Weinberger; Heinz Mandl (ICLS, 2004)