@article{Huynh198321,
    Abstract = {Commutative grammars are introduced, and various classes of commutative grammars are defined. The complexity of uniform word problems for commutative grammars is investigated.},
    Author = {Huynh, Dung T.},
    File = {Commutative grammars The complexity of uniform word problems - Huynh (0) (0) - a - a - i.pdf},
    ISSN = {0019-9958},
    Journal = {Information and Control},
    Number = {1},
    Pages = {21 - 39},
    Title = {Commutative grammars: The complexity of uniform word problems},
    URL = {http://www.sciencedirect.com/science/article/pii/S0019995883800229},
    Volume = {57},
    Year = {1983},
    bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/S0019995883800229},
    bdsk-url-2 = {http://dx.doi.org/10.1016/S0019-9958(83)80022-9},
    date-added = {2015-03-15 08:31:39 +0000},
    date-modified = {2015-03-15 08:31:39 +0000},
    doi = {10.1016/S0019-9958(83)80022-9}
}

@article{Huynh198321, Abstract = {Commutative grammars are introduced, and various classes of commutative grammars are defined. The complexity of uniform word problems for commutative grammars is investigated.}, Author = {Huynh, Dung T.}, File = {Commutative grammars The complexity of uniform word problems - Huynh (0) (0) - a - a - i.pdf}, ISSN = {0019-9958}, Journal = {Information and Control}, Number = {1}, Pages = {21 - 39}, Title = {Commutative grammars: The complexity of uniform word problems}, URL = {http://www.sciencedirect.com/science/article/pii/S0019995883800229}, Volume = {57}, Year = {1983}, bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/S0019995883800229}, bdsk-url-2 = {http://dx.doi.org/10.1016/S0019-9958(83)80022-9}, date-added = {2015-03-15 08:31:39 +0000}, date-modified = {2015-03-15 08:31:39 +0000}, doi = {10.1016/S0019-9958(83)80022-9} }