@article{Robson:1989:SSS:63800.63808,
    Address = {Amsterdam, The Netherlands, The Netherlands},
    Author = {Robson, J. M.},
    ISSN = {0020-0190},
    Journal = {Inf. Process. Lett.},
    Month = {February},
    Number = {4},
    Pages = {209--214},
    Publisher = {Elsevier North-Holland, Inc.},
    Title = {Separating Strings with Small Automata},
    URL = {http://dx.doi.org/10.1016/0020-0190(89)90215-9},
    Volume = {30},
    Year = {1989},
    acmid = {63808},
    bdsk-url-1 = {http://dx.doi.org/10.1016/0020-0190(89)90215-9},
    date-added = {2018-10-10 06:19:40 +0000},
    date-modified = {2018-10-10 06:19:40 +0000},
    issue_date = {February 1989},
    numpages = {6},
    doi = {10.1016/0020-0190(89)90215-9}
}

@article{Robson:1989:SSS:63800.63808, Address = {Amsterdam, The Netherlands, The Netherlands}, Author = {Robson, J. M.}, ISSN = {0020-0190}, Journal = {Inf. Process. Lett.}, Month = {February}, Number = {4}, Pages = {209--214}, Publisher = {Elsevier North-Holland, Inc.}, Title = {Separating Strings with Small Automata}, URL = {http://dx.doi.org/10.1016/0020-0190(89)90215-9}, Volume = {30}, Year = {1989}, acmid = {63808}, bdsk-url-1 = {http://dx.doi.org/10.1016/0020-0190(89)90215-9}, date-added = {2018-10-10 06:19:40 +0000}, date-modified = {2018-10-10 06:19:40 +0000}, issue_date = {February 1989}, numpages = {6}, doi = {10.1016/0020-0190(89)90215-9} }