@inproceedings{DBLP:conf/sigmod/LiCIS05,
  author    = {Chengkai Li and
               Kevin Chen-Chuan Chang and
               Ihab F. Ilyas and
               Sumin Song},
  title     = {RankSQL: Query Algebra and Optimization for Relational Top-k
               Queries},
  booktitle = {SIGMOD Conference},
  year      = {2005},
  pages     = {131-142},
  ee        = {http://doi.acm.org/10.1145/1066157.1066173},
  crossref  = {DBLP:conf/sigmod/2005},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/sigmod/2005,
  editor    = {Fatma {\"O}zcan},
  title     = {Proceedings of the ACM SIGMOD International Conference on
               Management of Data, Baltimore, Maryland, USA, June 14-16,
               2005},
  booktitle = {SIGMOD Conference},
  publisher = {ACM},
  year      = {2005},
  isbn      = {1-59593-060-4},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}