F. Ma, W. Wang, and Z. Deng. Social Media Retrieval and Mining, volume 387 of Communications in Computer and Information Science, Springer, Berlin/Heidelberg, (2013)
X. Fu, J. Budzik, and K. Hammond. IUI '00: Proceedings of the 5th International Conference on Intelligent User Interfaces, page 106--112. New York, NY, USA, ACM Press, (2000)