Zhang, Mingmin, Nan Xiang, Kangkan Wang, Zhigeng Pan, Haibo Yuan, and Houquan Liu. “Avatar-Based Intelligent Navigation for Online Shanghai Expo”. International Journal of Virtual Reality 9, no. 3 (January 1, 2010): 39–45. Accessed January 22, 2026. https://ijvr.eu/article/view/2777.