@techreport{ilprints280,
          number = {1997-65},
            type = {Technical Report},
           title = {An Expressive Model for Comparing Tree-Structured Data},
          author = {S. Chawathe and H. Garcia-Molina},
       publisher = {Stanford},
            year = {1997},
     institution = {Stanford InfoLab},
        keywords = {Differencing, trees},
             url = {http://ilpubs.stanford.edu:8090/280/},
        abstract = {We present a novel alternative to the standard edit-script model used to describe changes in tree-structured data.  Instead of a procedural edit script, we use a declarative description of tree transformations. This approach allows us to cleanly describe subtree operations such as moves and copies, leading to simpler differencing algorithms.}
}