Using ConceptGrid as an easy authoring technique to check natural language responses

@article{Blessing2015UsingCA,
  title={Using ConceptGrid as an easy authoring technique to check natural language responses},
  author={Stephen Blessing and Shrenik Devasani and Stephen B. Gilbert and Jivko Sinapov},
  journal={IJLT},
  year={2015},
  volume={10},
  pages={50-70}
}