T. Tang and G. Mccalla, Beyond Learners??? Interest: Personalized Paper Recommendation Based on Their Pedagogical Features for an e-Learning System, In: LNCS, vol.3157, pp.301-310, 2004.
DOI : 10.1007/978-3-540-28633-2_33

H. Hage and E. Aïmeur, Harnessing Learner???s Collective Intelligence: A Web2.0 Approach to E-Learning, LNCS, vol.5091, pp.438-447, 2008.
DOI : 10.1007/978-3-540-69132-7_47

E. Kiliç-Çakmak, Learning strategies and motivational factors predicting information literacy self-efficacy of e-learners, Australasian Journal of Educational Technology, vol.26, issue.2, pp.192-208, 2010.
DOI : 10.14742/ajet.1090

J. B. Schafer, J. Konstan, and J. Riedl, Recommender systems in e-commerce, Proceedings of the 1st ACM conference on Electronic commerce , EC '99, pp.158-166, 1999.
DOI : 10.1145/336992.337035

A. M. Rashid, K. Ling, R. Tassone, P. Resnick, R. Kraut et al., Motivating participation by displaying the value of contribution, Proceedings of the SIGCHI conference on Human Factors in computing systems , CHI '06, pp.955-958, 2006.
DOI : 10.1145/1124772.1124915

J. Leino, Case Study, Educational Recommender Systems and Technologies: Practices and Challenges, pp.258-280, 2011.
DOI : 10.4018/978-1-61350-489-5.ch011

URL : https://hal.archives-ouvertes.fr/hal-01377486

N. Manouselis, H. Drachsler, R. Vuorikari, H. Hummel, and R. Koper, Recommender Systems in Technology Enhanced Learning, Recommender Systems Handbook, pp.387-415, 2011.
DOI : 10.1007/978-0-387-85820-3_12

URL : http://dspace.ou.nl/bitstream/1820/3071/1/RecSysTEL_preface.pdf

O. C. Santos and J. G. Boticario, Modeling recommendations for the educational domain, Procedia Computer Science, vol.1, issue.2, pp.2793-2800, 2010.
DOI : 10.1016/j.procs.2010.08.004

URL : http://doi.org/10.1016/j.procs.2010.08.004

K. I. Ghauth and N. A. Abdullah, Learning materials recommendation using good learners??? ratings and content-based filtering, Educational Technology Research and Development, vol.7, issue.1, pp.711-727, 2010.
DOI : 10.1007/s11423-010-9155-4

H. Drachsler, H. G. Hummel, and R. Koper, Identifying the Goal, User model and Conditions of Recommender Systems for Formal and Informal Learning, Journal of Digital Information, vol.10, issue.2, pp.4-24, 2009.

P. Pu and L. Chen, Trust-inspiring explanation interfaces for recommender systems, Knowledge-Based Systems, vol.20, issue.6, pp.542-556, 2007.
DOI : 10.1016/j.knosys.2007.04.004

J. Konstan and J. Riedl, Recommender Systems: From Algorithms to User Experience. User Model User-Adap Inter, pp.101-123, 2012.
DOI : 10.1007/s11257-011-9112-x

A. Talwar, R. Jurca, and B. Faltings, Understanding user behavior in online feedback reporting, Proceedings of the 8th ACM conference on Electronic commerce , EC '07, pp.134-142, 2007.
DOI : 10.1145/1250910.1250931

S. K. Lam and J. Riedl, Shilling recommender systems for fun and profit, Proceedings of the 13th conference on World Wide Web , WWW '04, pp.393-402, 2004.
DOI : 10.1145/988672.988726

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.58.7148

E. I. Sparling and S. Sen, Rating, Proceedings of the fifth ACM conference on Recommender systems, RecSys '11, pp.149-156, 2011.
DOI : 10.1145/2043932.2043961

N. Hu, P. Pavlou, and J. Zhang, Can online reviews reveal a product's true quality?, Proceedings of the 7th ACM conference on Electronic commerce , EC '06, pp.324-330, 2006.
DOI : 10.1145/1134707.1134743

T. Hennig-thurau, K. P. Gwinner, G. Walsh, and D. D. Gremler, Electronic word-of-mouth via consumer-opinion platforms: What motivates consumers to articulate themselves on the Internet?, Journal of Interactive Marketing, vol.18, issue.1, pp.38-52, 2004.
DOI : 10.1002/dir.10073

J. Leino and K. Räihä, User Experiences and Impressions of Recommenders in Complex Information Environments, IEEE Data Engineering Bulletin, vol.31, issue.2, pp.32-39, 2008.

O. Nov and C. Ye, Why do people tag?, Communications of the ACM, vol.53, issue.7, pp.128-131, 2010.
DOI : 10.1145/1785414.1785450

S. M. Mcnee, J. Riedl, and J. Konstan, Being accurate is not enough, CHI '06 extended abstracts on Human factors in computing systems, CHI EA '06, pp.1097-1101, 2006.
DOI : 10.1145/1125451.1125659

D. W. Mcmillan and D. M. Chavis, Sense of community: A definition and theory, Journal of Community Psychology, vol.13, issue.1, pp.6-23, 1986.
DOI : 10.1002/1520-6629(198601)14:1<6::AID-JCOP2290140103>3.0.CO;2-I