@inproceedings{EDM-2008-PardosHRB,
	author        = "Zachary A. Pardos and Neil T. Heffernan and Carolina Ruiz and Joseph E. Beck",
	booktitle     = "{Educational Data Mining 2008, The First International Conference on Educational Data Mining, Montreal, Québec, Canada, June 20-21, 2008. Proceedings}",
	ee            = "http://www.educationaldatamining.org/EDM2008/uploads/proc/15_Pardos_44.pdf",
	pages         = "147--156",
	publisher     = "{www.educationaldatamining.org}",
	title         = "{The Composition Effect: Conjuntive or Compensatory? An Analysis of Multi-Skill Math Questions in ITS}",
	year          = 2008,
}