BenediktLN07'

BibTeX

@article{DBLP:journals/tocl/BenediktLN07,
  author    = {Michael Benedikt and
               Leonid Libkin and
               Frank Neven},
  title     = {Logical definability and query languages over ranked and
               unranked trees},
  journal   = {ACM Trans. Comput. Log.},
  volume    = {8},
  number    = {2},
  year      = {2007},
  ee        = {http://doi.acm.org/10.1145/1227839.1227843},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}