@inproceedings{HUB-CSES/LP14,
  author = "N. T. Le and N. Pinkwart",
  title = "Towards a Classification for Programming Exercises",
  year = 2014,
  booktitle = "Proceedings of the 2nd Workshop on AI-supported Education for Computer Science at the 12th International Conference on Intelligent Tutoring, Systems (ITS)"
}