Xiaogen, Li, Wang Zong-min, Wang An-ming, and Yang Xiang-bing. “The Key Techniques Study of Constructing the Roaming Modelin Virtual Environment”. Advances in Systems Science and Applications 11, no. 1-2 (March 20, 2011): 55-60. Accessed April 25, 2024. https://ijassa.ipu.ru/index.php/ijassa/article/view/291.