@article{sun2009mining,
  title={Mining reviews for product comparison and recommendation},
  author={Sun, Jianshu and Long, Chong and Zhu, Xiaoyan and Huang, Minlie},
  journal={Polibits},
  number={39},
  pages={33--40},
  year={2009},
  publisher={Instituto Polit{'e}cnico Nacional, Centro de Innovaci{'o}n y Desarrollo Tecnol{'o}gico en C{'o}mputo}
}