@article{<a href="http://dblp.uni-trier.de/db/about/bibtex.html">DBLP</a>:journals/tods/WangY12,
  author    = {Junhu Wang and
               Jeffrey Xu Yu},
  title     = {Revisiting answering tree pattern queries using views},
  journal   = {ACM Trans. Database Syst.},
  volume    = {37},
  number    = {3},
  year      = {2012},
  pages     = {18},
  ee        = {http://doi.acm.org/10.1145/2338626.2338631},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}