@article{Bouajjani2000221,
    Author = {Bouajjani, Ahmed and Esparza, Javier and Finkel, Alain and Maler, Oded and Rossmanith, Peter and Willems, Bernard and Wolper, Pierre},
    File = {An efficient automata approach to some problems on context-free grammars - Bouajjani, Esparza, Finkel, Maler, Rossmanith, Willems, Wolper (0) (0) - a - a - x.pdf},
    ISSN = {0020-0190},
    Journal = {Information Processing Letters},
    Keywords = {pushdown automata and saturation method},
    Number = {5{\^a}€``6},
    Pages = {221 - 227},
    Title = {An efficient automata approach to some problems on context-free grammars},
    URL = {http://www.sciencedirect.com/science/article/pii/S0020019000000557},
    Volume = {74},
    Year = {2000},
    bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/S0020019000000557},
    bdsk-url-2 = {http://dx.doi.org/10.1016/S0020-0190(00)00055-7},
    date-added = {2013-03-12 18:43:22 +0000},
    date-modified = {2013-03-12 18:43:30 +0000},
    file-2 = {An efficient automata approach to some problems on context-free grammars - Bouajjani, Esparza, Finkel, Maler, Rossmanith, Willems, Wolper (1) (0) - a - a - x.pdf},
    doi = {10.1016/S0020-0190(00)00055-7}
}

@article{Bouajjani2000221, Author = {Bouajjani, Ahmed and Esparza, Javier and Finkel, Alain and Maler, Oded and Rossmanith, Peter and Willems, Bernard and Wolper, Pierre}, File = {An efficient automata approach to some problems on context-free grammars - Bouajjani, Esparza, Finkel, Maler, Rossmanith, Willems, Wolper (0) (0) - a - a - x.pdf}, ISSN = {0020-0190}, Journal = {Information Processing Letters}, Keywords = {pushdown automata and saturation method}, Number = {5{\^a}€``6}, Pages = {221 - 227}, Title = {An efficient automata approach to some problems on context-free grammars}, URL = {http://www.sciencedirect.com/science/article/pii/S0020019000000557}, Volume = {74}, Year = {2000}, bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/S0020019000000557}, bdsk-url-2 = {http://dx.doi.org/10.1016/S0020-0190(00)00055-7}, date-added = {2013-03-12 18:43:22 +0000}, date-modified = {2013-03-12 18:43:30 +0000}, file-2 = {An efficient automata approach to some problems on context-free grammars - Bouajjani, Esparza, Finkel, Maler, Rossmanith, Willems, Wolper (1) (0) - a - a - x.pdf}, doi = {10.1016/S0020-0190(00)00055-7} }