@inproceedings{DBLP:conf/sigmod/HaasFLP89,
  author    = {Laura M. Haas and
               Johann Christoph Freytag and
               Guy M. Lohman and
               Hamid Pirahesh},
  title     = {Extensible Query Processing in Starburst},
  booktitle = {SIGMOD Conference},
  year      = {1989},
  pages     = {377-388},
  ee        = {http://doi.acm.org/10.1145/67544.66962},
  crossref  = {DBLP:conf/sigmod/89, DBLP:conf/sigmod/89},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/sigmod/89,
  editor    = {James Clifford and
               Bruce G. Lindsay and
               David Maier},
  title     = {Proceedings of the 1989 ACM SIGMOD International Conference
               on Management of Data, Portland, Oregon, May 31 - June 2,
               1989},
  publisher = {ACM Press},
  year      = {1989},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}