Z. Li, B. Ding, J. Han, R. Kays, and P. Nye. Proceedings of the 16th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, page 1099--1108. New York, NY, USA, ACM, (2010)
Y. Ye, Y. Zheng, Y. Chen, J. Feng, and X. Xie. International Conference on Mobile Data Management: Systems, Services and Middleware (MDM), page 1--10. IEEE, (2009)
T. Yan, D. Chu, D. Ganesan, A. Kansal, and J. Liu. International Conference on Mobile Systems, Applications, and Services, page 113--126. New York, NY, USA, ACM, (2012)