@article{Koutschan:2008:RLG:1332144.1332456,
    Address = {Essex, UK},
    Author = {Koutschan, Christoph},
    File = {1-s2.0-S0304397507007906-main (0) - a - a - c.pdf},
    ISSN = {0304-3975},
    Journal = {Theor. Comput. Sci.},
    Keywords = {Formal power series, Integer sequence, N -rationality, Regular language, Soittola's Theorem},
    Month = {February},
    Number = {1-2},
    Pages = {65--74},
    Publisher = {Elsevier Science Publishers Ltd.},
    Title = {Regular Languages and Their Generating Functions: The Inverse Problem},
    URL = {http://dx.doi.org/10.1016/j.tcs.2007.10.031},
    Volume = {391},
    Year = {2008},
    acmid = {1332456},
    bdsk-url-1 = {http://dx.doi.org/10.1016/j.tcs.2007.10.031},
    date-added = {2018-05-10 15:18:33 +0000},
    date-modified = {2018-05-10 15:18:33 +0000},
    issue_date = {February, 2008},
    numpages = {10},
    doi = {10.1016/j.tcs.2007.10.031}
}

@article{Koutschan:2008:RLG:1332144.1332456, Address = {Essex, UK}, Author = {Koutschan, Christoph}, File = {1-s2.0-S0304397507007906-main (0) - a - a - c.pdf}, ISSN = {0304-3975}, Journal = {Theor. Comput. Sci.}, Keywords = {Formal power series, Integer sequence, N -rationality, Regular language, Soittola's Theorem}, Month = {February}, Number = {1-2}, Pages = {65--74}, Publisher = {Elsevier Science Publishers Ltd.}, Title = {Regular Languages and Their Generating Functions: The Inverse Problem}, URL = {http://dx.doi.org/10.1016/j.tcs.2007.10.031}, Volume = {391}, Year = {2008}, acmid = {1332456}, bdsk-url-1 = {http://dx.doi.org/10.1016/j.tcs.2007.10.031}, date-added = {2018-05-10 15:18:33 +0000}, date-modified = {2018-05-10 15:18:33 +0000}, issue_date = {February, 2008}, numpages = {10}, doi = {10.1016/j.tcs.2007.10.031} }