@inproceedings{powergradingaclusteringapproachtoamplify,
  title = {Powergrading: a Clustering Approach to Amplify Human Effort for Short Answer Grading},
  author = {Sumit Basu and Chuck Jacobs and V and Lucy erwende},
  year = {2013},
  booktitle = {TACL 2013 1},
  url = {https://aclanthology.org/Q13-1032},
}