@InProceedings{zhou-dai-chen:2015:EMNLP,
  author    = {Zhou, Lipu  and  Dai, Shuaixiang  and  Chen, Liwei},
  title     = {Learn to Solve Algebra Word Problems Using Quadratic Programming},
  booktitle = {Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing},
  month     = {September},
  year      = {2015},
  address   = {Lisbon, Portugal},
  publisher = {Association for Computational Linguistics},
  pages     = {817--822},
  url       = {https://aclweb.org/anthology/D/D15/D15-1096}
}