@article{DBLP:journals/tods/BarceloLLW12,
author = {Pablo Barcel{\'o} and
Leonid Libkin and
Anthony Widjaja Lin and
Peter T. Wood},
title = {Expressive Languages for Path Queries over Graph-Structured
Data},
journal = {ACM Trans. Database Syst.},
volume = {37},
number = {4},
year = {2012},
pages = {31},
ee = {http://doi.acm.org/10.1145/2389241.2389250},
bibsource = {DBLP, http://dblp.uni-trier.de}
}