S. Wu, Y. Zhao, H. Zhang, C. Zhang and L. Cao, “Debt Detection in Social Security by Adaptive Sequence Classification,” Proceedings of the 3rd International Conference on Knowledge Science, Engineering and Management, Vienna, 25-27 November 2009, pp. 192-203.
 H. Zhang, Y. Zhao, L. Cao, C. Zhang and H. Bohlscheid, “Customer Activity Sequence Classification for Debt Prevention in Social Security”, Journal of Computer Science and Technology, Vol. 24, No. 6, 2009, pp. 1000-1009. HUdoi:10.1007/s11390-009-9288-2U
 L. O. Gostin, J. T. Brezina, M. Powers, R. Kozloff, R. Faden and D. D. Steinauer, “Privacy and Security of Personal Information in a New Health Care System,” The Journal of American Medical Association, Vol. 270, No. 20, 1993, pp. 2487-2493. HUdoi:10.1001/jama.1993.03510200093038U
 J. A. Lyman, K. Scully and J. H. Harrison, “The Development of Health Care Data Warehouses to Support Data Mining,” Clinics in Laboratory Medicine, Vol. 28, No. 1, 2008, pp. 55-71. HUdoi.org/10.1016/j.cll.2007.10.003U
 J. Hu, Q. Fu and M. Liu, “Query Processing in INM Database System,” Proceedings of 11th International Conference on Web Age Information Management (WAIM 2010), Chengdu, 15-17 July 2010 pp. 525-536
 L. Luo, H. Yang and X. Li, “Towards Human Resource Information Query on Temporal XML”, Proceedings of 3rd International Conference on Internet Technology and Applications (ITAP 2012), Wuhan, 18-20 August 2012.