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Winkler, T., Herczeg, M. & Kritzenberger, H. (2002). Mixed Reality Environments as Collaborative and Constructive Learning Spaces for Elementary School Children. In P. Barker & S. Rebelsky (Eds.), Proceedings of ED-MEDIA 2002--World Conference on Educational Multimedia, Hypermedia & Telecommunications (pp. 1034-1039). Denver, Colorado, USA: Association for the Advancement of Computing in Education (AACE).