@InProceedings{doem,
  author =	 {Sudarshan S. Chawathe and Serge Abiteboul and
                  Jennifer Widom},
  title =	 {Representing and Querying Changes in Semistructured
                  Data},
  booktitle =    ICDE,
  year =	 1998,
  month =	 feb,
  address =	 {Orlando, Florida},
  pages =	 {4-13}
}