@article{Pynadath_1998,
    doi = {10.1109/34.655650},
    url = {https://doi.org/10.1109%2F34.655650},
    year = {1998},
    publisher = {Institute of Electrical and Electronics Engineers ({IEEE})},
    volume = {20},
    number = {1},
    pages = {65--77},
    author = {D.V. Pynadath and M.P. Wellman},
    title = {Generalized queries on probabilistic context-free grammars},
    journal = {{IEEE} Transactions on Pattern Analysis and Machine Intelligence}
}

@article{Pynadath_1998, doi = {10.1109/34.655650}, url = {https://doi.org/10.1109%2F34.655650}, year = {1998}, publisher = {Institute of Electrical and Electronics Engineers ({IEEE})}, volume = {20}, number = {1}, pages = {65--77}, author = {D.V. Pynadath and M.P. Wellman}, title = {Generalized queries on probabilistic context-free grammars}, journal = {{IEEE} Transactions on Pattern Analysis and Machine Intelligence} }