@InProceedings{liu-EtAl:2012:PAPERS,
  author    = {Liu, Xiaohua  and  Li, Yitong  and  Wei, Furu  and  Zhou, Ming},
  title     = {Graph-Based Multi-Tweet Summarization using Social Signals},
  booktitle = {Proceedings of COLING 2012},
  month     = {December},
  year      = {2012},
  address   = {Mumbai, India},
  publisher = {The COLING 2012 Organizing Committee},
  pages     = {1699--1714},
  url       = {http://www.aclweb.org/anthology/C12-1104}
}