@article{DBLP:journals/tkde/ArenasGP11,
author = {Marcelo Arenas and
Claudio Gutierrez and
Jorge P{\'e}rez},
title = {Some Remarks on the Paper "semQA: SPARQL with Idempotent
Disjunction"},
journal = {IEEE Trans. Knowl. Data Eng.},
volume = {23},
number = {4},
year = {2011},
pages = {638-639},
ee = {http://dx.doi.org/10.1109/TKDE.2010.139},
bibsource = {DBLP, http://dblp.uni-trier.de}
}