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Lee, S.h. & Liu, X. (2006). Online groupwork under cooperative and collaborative structures. In T. Reeves & S. Yamashita (Eds.), Proceedings of E-Learn 2006--World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education (pp. 2145-2148). Honolulu, Hawaii, USA: Association for the Advancement of Computing in Education (AACE).