Y. Takeuchi, and M. Sugimoto. Proceedings of the 1st International Workshop on Personalized Context Modeling and Management for UbiComp Applications (2005), page 91--100. (2005)
X. Zhang, N. Mamoulis, D. Cheung, and Y. Shou. Proceedings of the tenth ACM SIGKDD international conference on Knowledge discovery and data mining, page 384--393. ACM, (2004)
Y. Zheng, Y. Chen, X. Xie, and W. Ma. Mobile Data Management: Systems, Services and Middleware, 2009. MDM'09. Tenth International Conference on, page 357--358. IEEE, (2009)