@article{ritter2013declarative,
  title={Declarative to Procedural Tutors: A family of cognitive architecture-based tutors},
  author={Ritter, Frank E and Yeh, Kuo-Chuan (Martin) and Cohen, Mark A and Weyhrauch, Peter and Kim, Jong W and Hobbs, J Nicholas},
  journal={Proceedings of the 22nd Conference on Behavior Representation in Modeling and Simulation},
  year={2013}
}