@inproceedings{DBLP:conf/its/KiaredRF06,
  author    = {Sofiane A. Kiared and
               Mohammed Abdel Razek and
               Claude Frasson},
  title     = {The Pyramid Collaborative Filtering Method: Toward an Efficient
               E-Course},
  booktitle = {Intelligent Tutoring Systems},
  year      = {2006},
  pages     = {248-257},
  ee        = {http://dx.doi.org/10.1007/11774303_25},
  crossref  = {DBLP:conf/its/2006},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/its/2006,
  editor    = {Mitsuru Ikeda and
               Kevin D. Ashley and
               Tak-Wai Chan},
  title     = {Intelligent Tutoring Systems, 8th International Conference,
               ITS 2006, Jhongli, Taiwan, June 26-30, 2006, Proceedings},
  booktitle = {Intelligent Tutoring Systems},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {4053},
  year      = {2006},
  isbn      = {3-540-35159-0},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}