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Serdyukov, P. & Hill, R. (2009). Patterns of Participation in Online Asynchronous Discussions. In T. Bastiaens, J. Dron & C. Xin (Eds.), Proceedings of E-Learn 2009--World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education (pp. 1425-1432). Vancouver, Canada: Association for the Advancement of Computing in Education (AACE).