@inproceedings{yih2007multi,
  title={Multi-Document Summarization by Maximizing Informative Content-Words.},
  author={Yih, Wen-tau and Goodman, Joshua and Vanderwende, Lucy and Suzuki, Hisami},
  booktitle={IJCAI},
  volume={7},
  pages={1776--1782},
  year={2007}
}