@inproceedings{HCI-AS-2007-SaC07a,
	author        = "Marco de Sá and Luís Carriço",
	booktitle     = "{Proceedings of the 12th International Conference on Human-Computer Interaction. Part IV: HCI Applications and Services}",
	doi           = "10.1007/978-3-540-73111-5_27",
	isbn          = "978-3-540-73109-2",
	pages         = "235--244",
	publisher     = "{Springer International Publishing}",
	series        = "{Lecture Notes in Computer Science}",
	title         = "{Detecting Learning Difficulties on Ubiquitous Scenarios}",
	volume        = 4553,
	year          = 2007,
}