@article{GOLDMAN1978318,
    Author = {Goldman, Jay R},
    File = {1-s2.0-0097316578900626-main (0) - a - a - b.pdf},
    ISSN = {0097-3165},
    Journal = {Journal of Combinatorial Theory, Series A},
    Number = {3},
    Pages = {318 - 338},
    Title = {Formal languages and enumeration},
    URL = {http://www.sciencedirect.com/science/article/pii/0097316578900626},
    Volume = {24},
    Year = {1978},
    bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/0097316578900626},
    bdsk-url-2 = {https://doi.org/10.1016/0097-3165(78)90062-6},
    date-added = {2018-05-10 15:33:40 +0000},
    date-modified = {2018-05-10 15:33:40 +0000},
    doi = {10.1016/0097-3165(78)90062-6}
}

@article{GOLDMAN1978318, Author = {Goldman, Jay R}, File = {1-s2.0-0097316578900626-main (0) - a - a - b.pdf}, ISSN = {0097-3165}, Journal = {Journal of Combinatorial Theory, Series A}, Number = {3}, Pages = {318 - 338}, Title = {Formal languages and enumeration}, URL = {http://www.sciencedirect.com/science/article/pii/0097316578900626}, Volume = {24}, Year = {1978}, bdsk-url-1 = {http://www.sciencedirect.com/science/article/pii/0097316578900626}, bdsk-url-2 = {https://doi.org/10.1016/0097-3165(78)90062-6}, date-added = {2018-05-10 15:33:40 +0000}, date-modified = {2018-05-10 15:33:40 +0000}, doi = {10.1016/0097-3165(78)90062-6} }