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Rodríguez, M.C. (2008). Argumentation and Critical Thinking in Online Forums of a Mixed Course. In J. Luca & E. Weippl (Eds.), Proceedings of ED-MEDIA 2008--World Conference on Educational Multimedia, Hypermedia & Telecommunications (pp. 2702-2708). Vienna, Austria: Association for the Advancement of Computing in Education (AACE).