@inproceedings{ZLS04,

    author    = "Cai-Nicolas Ziegler and Georg Lausen and Lars Schmidt-Thieme",
    title     = "Taxonomy-driven Computation of Product Recommendations",
    booktitle = "Proceedings of the 2004 ACM CIKM Conference on Information and Knowledge Management",
    year      = "2004",
    month     = "November",
    isbn      = "ISBN 1-58113-874-1",
    pages     = "406--415",
    address   = "Washington, D.C., USA",
    publisher = "ACM Press"
}