@InProceedings{bbdiff,
  author = 	 {S. Chawathe and H. Garcia-Molina},
  title = 	 {Meaningful Change Detection in Structured Data},
  booktitle = 	 {Proceedings of the ACM SIGMOD International
		  Conference on Management of Data},
  year =	 1997,
  address =	 {Tuscon, Arizona},
  month =	 may,
  pages =	 {26-37}
}