@inproceedings{ijcai1999p157,
  title     = {Automatic Diagnosis of Student Programs in Programming Learning Environments},
  author    = {Xu, Songwen and Chee, Yam San},
  booktitle = {Proceedings of the Sixteenth International Joint Conference on
               Artificial Intelligence, {IJCAI-99}},
  publisher = {International Joint Conferences on Artificial Intelligence},
  editor    = {Thomas Dean},
  pages     = {1102--1106},
  year      = {1999},
  note      = {Qualitative Reasoning and Diagnosis},
  url       = {https://ijcai.org/proceedings/1999/157},
}