@inproceedings{TUC-CSCW/PLAA09,
author = "N. Pinkwart and C. Lynch and K. D. Ashley and V. Aleven",
title = "Assessing Argument Diagrams in an Ill-defined Domain",
year = 2009,
booktitle = "Proceedings of the 14th International Conference on Artificial Intelligence in Education (AIED)",
publisher = "IOS Press",
number = 200
}