@article{deLuca:1994:WQR:192876.192889,
    Address = {Secaucus, NJ, USA},
    Author = {de Luca, Aldo and Varricchio, Stefano},
    File = {Well quasi-orders and regular languages - Luca, Varricchio (0) (0) - a - a - h.pdf},
    ISSN = {0001-5903},
    Journal = {Acta Inf.},
    Keywords = {well quasi-orders},
    Month = {September},
    Number = {6},
    Pages = {539--557},
    Publisher = {Springer-Verlag New York, Inc.},
    Title = {Well quasi-orders and regular languages},
    URL = {http://dx.doi.org/10.1007/BF01213206},
    Volume = {31},
    Year = {1994},
    acmid = {192889},
    bdsk-url-1 = {http://www.springerlink.com/content/t118370u60375374},
    bdsk-url-2 = {http://dx.doi.org/10.1007/BF01213206},
    date-added = {2012-12-01 15:16:53 +0000},
    date-modified = {2012-12-02 15:43:55 +0000},
    issue_date = {Sept. 1994},
    numpages = {19},
    doi = {10.1007/BF01213206}
}

@article{deLuca:1994:WQR:192876.192889, Address = {Secaucus, NJ, USA}, Author = {de Luca, Aldo and Varricchio, Stefano}, File = {Well quasi-orders and regular languages - Luca, Varricchio (0) (0) - a - a - h.pdf}, ISSN = {0001-5903}, Journal = {Acta Inf.}, Keywords = {well quasi-orders}, Month = {September}, Number = {6}, Pages = {539--557}, Publisher = {Springer-Verlag New York, Inc.}, Title = {Well quasi-orders and regular languages}, URL = {http://dx.doi.org/10.1007/BF01213206}, Volume = {31}, Year = {1994}, acmid = {192889}, bdsk-url-1 = {http://www.springerlink.com/content/t118370u60375374}, bdsk-url-2 = {http://dx.doi.org/10.1007/BF01213206}, date-added = {2012-12-01 15:16:53 +0000}, date-modified = {2012-12-02 15:43:55 +0000}, issue_date = {Sept. 1994}, numpages = {19}, doi = {10.1007/BF01213206} }