Link  bibtex   

@article{DBLP:journals/jacm/ArenasL08,
  author    = {Marcelo Arenas and
               Leonid Libkin},
  title     = {XML data exchange: Consistency and query answering},
  journal   = {J. ACM},
  volume    = {55},
  number    = {2},
  year      = {2008},
  ee        = {http://doi.acm.org/10.1145/1346330.1346332},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}