@article{Bovet:1992:RLB:146141.146143,
    Address = {Amsterdam, The Netherlands, The Netherlands},
    Author = {Bovet, Daniel P. and Varricchio, Stefano},
    File = {On the regularity of languages on a binary alphabet generated by copying systems - Bovet, Varricchio (0) (0) - a - a - w.pdf},
    ISSN = {0020-0190},
    Journal = {Inf. Process. Lett.},
    Keywords = {well quasi-orders},
    Month = {November},
    Number = {3},
    Pages = {119--123},
    Publisher = {Elsevier North-Holland, Inc.},
    Title = {On the regularity of languages on a binary alphabet generated by copying systems},
    URL = {http://dx.doi.org/10.1016/0020-0190(92)90050-6},
    Volume = {44},
    Year = {1992},
    acmid = {146143},
    bdsk-url-1 = {http://dx.doi.org/10.1016/0020-0190(92)90050-6},
    date-added = {2012-12-01 09:22:53 +0000},
    date-modified = {2012-12-01 15:07:54 +0000},
    issue_date = {Nov. 30, 1992},
    numpages = {5},
    doi = {10.1016/0020-0190(92)90050-6}
}

@article{Bovet:1992:RLB:146141.146143, Address = {Amsterdam, The Netherlands, The Netherlands}, Author = {Bovet, Daniel P. and Varricchio, Stefano}, File = {On the regularity of languages on a binary alphabet generated by copying systems - Bovet, Varricchio (0) (0) - a - a - w.pdf}, ISSN = {0020-0190}, Journal = {Inf. Process. Lett.}, Keywords = {well quasi-orders}, Month = {November}, Number = {3}, Pages = {119--123}, Publisher = {Elsevier North-Holland, Inc.}, Title = {On the regularity of languages on a binary alphabet generated by copying systems}, URL = {http://dx.doi.org/10.1016/0020-0190(92)90050-6}, Volume = {44}, Year = {1992}, acmid = {146143}, bdsk-url-1 = {http://dx.doi.org/10.1016/0020-0190(92)90050-6}, date-added = {2012-12-01 09:22:53 +0000}, date-modified = {2012-12-01 15:07:54 +0000}, issue_date = {Nov. 30, 1992}, numpages = {5}, doi = {10.1016/0020-0190(92)90050-6} }