@article{Benedikt_2008,
    doi = {10.1145/1346330.1346333},
    url = {https://doi.org/10.1145%2F1346330.1346333},
    year = {2008},
    month = {may},
    publisher = {Association for Computing Machinery ({ACM})},
    volume = {55},
    number = {2},
    pages = {1--79},
    author = {Michael Benedikt and Wenfei Fan and Floris Geerts},
    title = {{XPath} satisfiability in the presence of {DTDs}},
    journal = {Journal of the {ACM}}
}

@article{Benedikt_2008, doi = {10.1145/1346330.1346333}, url = {https://doi.org/10.1145%2F1346330.1346333}, year = {2008}, month = {may}, publisher = {Association for Computing Machinery ({ACM})}, volume = {55}, number = {2}, pages = {1--79}, author = {Michael Benedikt and Wenfei Fan and Floris Geerts}, title = {{XPath} satisfiability in the presence of {DTDs}}, journal = {Journal of the {ACM}} }