![[ACM Press the 2009 joint international conference - Austin, TX, USA (2009.06.15-2009.06.19)] Proceedings of the 2009 joint international conference on Digital libraries - JCDL '09 - A personalized learning environment]()
[ACM Press the 2009 joint international conference - Austin, TX, USA (2009.06.15-2009.06.19)] Proceedings of the 2009 joint international conference on Digital libraries - JCDL '09 - A personalized learning environmentde la Chica, Sebastian; Ahmad, Faisal; Gu, Qianyi; Okoye, Ifi; Maull, Keith; Sumner, Tamara; Butcher, Kirsten R. · 2009