9R Chellali, C Dumas,Nicolas Mollet, et al. A Virtual Classroomfor Collaborative and Distant E-Learning Systemby Teleoperating Real Devices[J].International Journal of Computer Games Technology, 2009:1-9.
10A S DRIGAS,L G.KOUKIANAKIS,J G GLENTZES.A virtual Lab for Hellenic cultural heritage:proceedings of the 5th WSEAS Int.Conf.on Artificial Intelligence,Knowledge Engineering and Data Bases,Madrid, Spain,2006 [C].Wisconsin:World Scientific and Engineering Academy and Society (WSEAS),2006:291-296.