@Inproceedings{schein2002methods,
  author = {Schein, Andrew I. and Popescul, Alexandrin and Ungar, Lyle H. and Pennock, David M.},
  title  = {Methods and Metrics for Cold-start Recommendations},

  year   = {2002},
  number = {},
  url    = {http://doi.acm.org/10.1145/564376.564421},
  doi = {10.1145/564376.564421},
  const  = {\ text}
}