T. Söderström, Discrete-time stochastic systems : estimation and control, 1994.
DOI : 10.1007/978-1-4471-0101-7

G. E. Box and G. M. Jenkins, Time series analysis : forecasting and control, 1970.
DOI : 10.1002/9781118619193

C. Bernier, A. Brun, A. Aghasaryan, M. Bouzid, J. Picault et al., Topology of communities for the collaborative recommendations to groups, 2010.
URL : https://hal.archives-ouvertes.fr/hal-00546932

C. Senot, D. Kostadinov, M. Bouzid, J. Picault, A. Aghasaryan et al., Analysis of Strategies for Building Group Profiles, 2010.
DOI : 10.1007/978-3-642-13470-8_6

URL : https://hal.archives-ouvertes.fr/inria-00548890

M. Pazzani and D. Billsus, Content-Based Recommendation Systems. The AdaptiveWeb, pp.325-341, 2007.
DOI : 10.1007/978-3-540-72079-9_10

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.130.8327

D. Goldberg, D. Nichols, B. Oki, and D. Terry, Using collaborative filtering to weave an information tapestry, Communications of the ACM, vol.35, issue.12, pp.61-70, 1992.
DOI : 10.1145/138859.138867

M. Grcar, D. Mladenic, B. Fortuna, and M. Groblenik, Data Sparsity Issues in the Collaborative Filtering Framework Advances in Web Mining and Web Usage Analysis, pp.58-76, 2006.

J. Smith, The book, The publishing company, 1998.