@article{Maletti:2009:PET:1654887.1654891,
    Address = {Philadelphia, PA, USA},
    Author = {Maletti, Andreas and Graehl, Jonathan and Hopkins, Mark and Knight, Kevin},
    File = {The Power of Extended Top-Down Tree Transducers - Maletti, Graehl, Hopkins, Knight (0) (0) - a - a - a.pdf},
    ISSN = {0097-5397},
    Journal = {SIAM J. Comput.},
    Keywords = {composition closure, hierarchy, natural language processing, tree transducer},
    Month = {June},
    Number = {2},
    Pages = {410--430},
    Publisher = {Society for Industrial and Applied Mathematics},
    Title = {The Power of Extended Top-Down Tree Transducers},
    URL = {http://dx.doi.org/10.1137/070699160},
    Volume = {39},
    Year = {2009},
    acmid = {1654891},
    bdsk-url-1 = {http://dx.doi.org/10.1137/070699160},
    date-added = {2014-01-09 14:03:29 +0000},
    date-modified = {2014-01-09 14:03:29 +0000},
    issue_date = {June 2009},
    numpages = {21},
    doi = {10.1137/070699160}
}

@article{Maletti:2009:PET:1654887.1654891, Address = {Philadelphia, PA, USA}, Author = {Maletti, Andreas and Graehl, Jonathan and Hopkins, Mark and Knight, Kevin}, File = {The Power of Extended Top-Down Tree Transducers - Maletti, Graehl, Hopkins, Knight (0) (0) - a - a - a.pdf}, ISSN = {0097-5397}, Journal = {SIAM J. Comput.}, Keywords = {composition closure, hierarchy, natural language processing, tree transducer}, Month = {June}, Number = {2}, Pages = {410--430}, Publisher = {Society for Industrial and Applied Mathematics}, Title = {The Power of Extended Top-Down Tree Transducers}, URL = {http://dx.doi.org/10.1137/070699160}, Volume = {39}, Year = {2009}, acmid = {1654891}, bdsk-url-1 = {http://dx.doi.org/10.1137/070699160}, date-added = {2014-01-09 14:03:29 +0000}, date-modified = {2014-01-09 14:03:29 +0000}, issue_date = {June 2009}, numpages = {21}, doi = {10.1137/070699160} }