Q. Li, Y. Zheng, X. Xie, Y. Chen, W. Liu, and W. Ma. Proceedings of the 16th ACM SIGSPATIAL international conference on Advances in geographic information systems, page 34. ACM, (2008)
H. Li, R. Srihari, C. Niu, and W. Li. Proceedings of the HLT-NAACL 2003 workshop on Analysis of geographic references - Volume 1, page 39--44. Stroudsburg, PA, USA, Association for Computational Linguistics, (2003)
C. Wang, X. Xie, L. Wang, Y. Lu, and W. Ma. Proceedings of the 2005 workshop on Geographic information retrieval, page 17--24. New York, NY, USA, ACM, (2005)
J. Luo, J. Yu, D. Joshi, and W. Hao. MM '08: Proceedings of the 16th ACM International Conference on Multimedia, Vancouver, Canada, page 1071-1080. (2008)