@article{<a href="http://dblp.uni-trier.de/db/about/bibtex.html">DBLP</a>:journals/pvldb/YinCLYC12,
  author    = {Hongzhi Yin and
               Bin Cui and
               Jing Li and
               Junjie Yao and
               Chen Chen},
  title     = {Challenging the Long Tail Recommendation},
  journal   = {PVLDB},
  volume    = {5},
  number    = {9},
  year      = {2012},
  pages     = {896-907},
  ee        = {http://vldb.org/pvldb/vol5/p896_hongzhiyin_vldb2012.pdf},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}