Y. Liu, B. Zhou, F. Chen, and D. Cheung. Proceedings of the 25th ACM International on Conference on Information and Knowledge Management, page 489--498. New York, NY, USA, ACM, (2016)
X. Wen, Y. Lin, and K. Pelechrinis. Proceedings of the 25th ACM International on Conference on Information and Knowledge Management, page 519--528. New York, NY, USA, ACM, (2016)