Juan Chen, Dayou Liu, Haiyang Jia, Changhai Zhang. Cardinal Direction Relations in 3D Space. In Zili Zhang, Jörg H. Siekmann, editors, Knowledge Science, Engineering and Management, Second International Conference, KSEM 2007, Melbourne, Australia, November 28-30, 2007, Proceedings. Volume 4798 of Lecture Notes in Computer Science, pages 623-629, Springer, 2007. [doi]
Abstract is missing.