Yongzhi Wang, Yehua Sheng, Liangchen Zhou, Fei Guo, Linlin Zhao. An underground space object-oriented three-dimensional hybrid spatial indexing method. In The 18th International Conference on Geoinformatics: GIScience in Change, Geoinformatics 2010, Peking University, Beijing, China, June, 18-20, 2010. pages 1-5, IEEE, 2010. [doi]
Abstract is missing.