@inproceedings{Figueira_2009,
    doi = {10.1145/1559795.1559827},
    url = {https://doi.org/10.1145%2F1559795.1559827},
    year = {2009},
    month = {jun},
    publisher = {{ACM}},
    author = {Diego Figueira},
    title = {Satisfiability of downward {XPath} with data equality tests},
    booktitle = {Proceedings of the twenty-eighth {ACM} {SIGMOD}-{SIGACT}-{SIGART} symposium on Principles of database systems}
}

@inproceedings{Figueira_2009, doi = {10.1145/1559795.1559827}, url = {https://doi.org/10.1145%2F1559795.1559827}, year = {2009}, month = {jun}, publisher = {{ACM}}, author = {Diego Figueira}, title = {Satisfiability of downward {XPath} with data equality tests}, booktitle = {Proceedings of the twenty-eighth {ACM} {SIGMOD}-{SIGACT}-{SIGART} symposium on Principles of database systems} }