@inproceedings{DBLP:conf/sigmod/BercovitzKKLZG09,
  author    = {Benjamin Bercovitz and
               Filip Kaliszan and
               Georgia Koutrika and
               Henry Liou and
               Zahra Mohammadi Zadeh and
               Hector Garcia-Molina},
  title     = {CourseRank: a social system for course planning},
  booktitle = {SIGMOD Conference},
  year      = {2009},
  pages     = {1107-1110},
  ee        = {http://doi.acm.org/10.1145/1559845.1559994},
  crossref  = {DBLP:conf/sigmod/2009},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/sigmod/2009,
  editor    = {Ugur \c{C}etintemel and
               Stanley B. Zdonik and
               Donald Kossmann and
               Nesime Tatbul},
  title     = {Proceedings of the ACM SIGMOD International Conference on
               Management of Data, SIGMOD 2009, Providence, Rhode Island,
               USA, June 29 - July 2, 2009},
  booktitle = {SIGMOD Conference},
  publisher = {ACM},
  year      = {2009},
  isbn      = {978-1-60558-551-2},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}