@article{DBLP:journals/pvldb/CautisK12, author = {Bogdan Cautis and Evgeny Kharlamov}, title = {Answering Queries using Views over Probabilistic XML: Complexity and Tractability}, journal = {PVLDB}, volume = {5}, number = {11}, year = {2012}, pages = {1148-1159}, ee = {http://vldb.org/pvldb/vol5/p1148_bogdancautis_vldb2012.pdf}, bibsource = {DBLP, http://dblp.uni-trier.de} }