@INPROCEEDINGS{2009-UMAP-Romero,
  TITLE = {Evaluating web based instructional models using association rule mining},
  BOOKTITLE = {Proceedings of the 17th International Conference on User Modeling, Adaptation, and Personalization, UMAP 2009},
  AUTHOR = {Garcia, E.  and Romero, C. and Ventura, S. and De Castro, C.},
  PAGES = {16--29},
  ADDRESS = {Trento, Italy},
  YEAR = {2009}
}