@article{Apt:1986:LAV:8882.8889,
    Address = {Amsterdam, The Netherlands, The Netherlands},
    Author = {Apt, K R and Kozen, D C},
    File = {Limits for automatic verification of finite-state concurrent systems - Apt, Kozen (0) (0) - a - a - w.pdf},
    ISSN = {0020-0190},
    Journal = {Inf. Process. Lett.},
    Keywords = {parametric systems},
    Month = {May},
    Number = {6},
    Pages = {307--309},
    Publisher = {Elsevier North-Holland, Inc.},
    Title = {Limits for automatic verification of finite-state concurrent systems},
    URL = {http://dx.doi.org/10.1016/0020-0190(86)90071-2},
    Volume = {22},
    Year = {1986},
    acmid = {8889},
    bdsk-url-1 = {http://dx.doi.org/10.1016/0020-0190(86)90071-2},
    date-added = {2012-12-29 14:26:27 +0000},
    date-modified = {2013-11-25 21:45:13 +0000},
    issue_date = {May 30,1986},
    numpages = {3},
    doi = {10.1016/0020-0190(86)90071-2}
}

@article{Apt:1986:LAV:8882.8889, Address = {Amsterdam, The Netherlands, The Netherlands}, Author = {Apt, K R and Kozen, D C}, File = {Limits for automatic verification of finite-state concurrent systems - Apt, Kozen (0) (0) - a - a - w.pdf}, ISSN = {0020-0190}, Journal = {Inf. Process. Lett.}, Keywords = {parametric systems}, Month = {May}, Number = {6}, Pages = {307--309}, Publisher = {Elsevier North-Holland, Inc.}, Title = {Limits for automatic verification of finite-state concurrent systems}, URL = {http://dx.doi.org/10.1016/0020-0190(86)90071-2}, Volume = {22}, Year = {1986}, acmid = {8889}, bdsk-url-1 = {http://dx.doi.org/10.1016/0020-0190(86)90071-2}, date-added = {2012-12-29 14:26:27 +0000}, date-modified = {2013-11-25 21:45:13 +0000}, issue_date = {May 30,1986}, numpages = {3}, doi = {10.1016/0020-0190(86)90071-2} }